That very simply puts terms side-by-side data in a nice obvious way. (Even with multiple DDs per DT.) A bit like the Wikipedia screenshot in the article but that's more balanced `grid-template-columns: 1fr 1fr;`. (But that's the flexibility of CSS Grid, right? Real easy to tweak this further for your needs/interests/design.)
Telemakhos•May 23, 2026
I was a bit surprised to see nested <div>s given as some sort of precursor pattern, when <dl> was part of HTML before 2.0 back in the days of table layout.
xigoi•May 23, 2026
It’s probably aimed at React developers, many of which are probably not even aware that elements other than <div> exist.
rickstanley•May 23, 2026
I've used this a good amount of times, when I coded in front end projects. The first time gave me that satisfying feeling of using the right tool for the job, like completing a puzzle of HTML semantics. I remember JAWS not announcing it correctly in 2018, not sure if it's better now.
wizzwizz4•May 23, 2026
When I checked in 2024 or 2025, Windows Narrator announced it differently in Chrome, Firefox, Edge (Chromium mode) and Edge (IE mode), and none of them worked how I would expect them to. Adrian Roselli's verdict (https://adrianroselli.com/2025/01/updated-brief-note-on-desc...):
> Description list support continues to be generally good (with VoiceOver still the outlier), even if you may not like how it is supported.
You shouldn't try to fix this kind of thing by mangling the HTML, since (1) users tend to be used to their screen reader's quirks, and (2) in situations like these, making it juuuust right in one screen reader is likely to make it incomprehensible in another. But it is important to be aware of these quirks, so you don't accidentally design an interface that relies on less-quirky behaviour.
phyzix5761•May 23, 2026
I'm curious if the spec actually says you can only wrap it with a div because I like to do semantic html and name my elements specific to my domain.
Exactly! It cracks me up when people name-check "semantic elements" when it doesn't actually mean anything in that context. Accessibility software doesn't understand the semantics of your custom elements, so there is no benefit in that situation whatsoever. Maybe it's easier for you to read and edit in the future, but that's it.
Somehow, people got convinced that <div> elements are evil and should never be used no matter what. Yes, you should use a more semantic element when it makes sense, but try to remember what that phrase actually means.
phyzix5761•May 23, 2026
I use it for readability and to express intention and meaning to the reader of my program. In the age of AI, perhaps, we've lost the need for that. But it was much appreciated in times before by those who came upon my code.
jazzypants•May 23, 2026
That's great! There's nothing wrong with that.
However, "semantic elements" became popular shortly after the push for the "semantic web" which was entirely based around making the web easier to process for machines. Many of the original sources talk about how it's easier to digest for humans too, but that's just a happy byproduct.
They're not as you can see here[1] and here[2]. They both inherit from the HTMLElement interface but div is considered an HTMLDivElement which makes it distinct from a custom element.
HTMLDivElement has no properties or methods not inherited from HTMLElement. If you inspect the user-agent styling of div versus any non-standard named element, you'll see that they have the same styling path, specifically unlike with span. In other words, non-standard elements and divs are all block elements with the default HTMLElement attributes and methods.
The use of HTMLElement and HTMLUnknownElement for the non-standard elements is to support future additions to the standard elements and enable subclassing down-tree instead of across-tree, which is noted in the spec.
notnullorvoid•May 23, 2026
As others have noted only the div is allowed. This isn't a unique situation either, the HTML spec despite being lenient in syntax is quite restrictive in behavior. It's unfortunate that XHTML (and XML parsing) didn't become the default as it's the opposite, more restrictive syntax, but lenient behavior.
For example in XHTML you can use custom elements as table rows or cells (provided you give them the correct role and CSS display property). This is because XHTML does not modify the tree during parsing, unlike HTML which will hoist out custom element children of the table to the table's parent.
captn3m0•May 23, 2026
> Prior to HTML5, this was called a definition list. This is because the <dl> was originally only intended to represent glossaries of terms and their definitions.
TIL I’ve been naming it wrong for a decade.
xp84•May 23, 2026
I don’t want to check what year html5 was standardized because I think it may be north of a decade ;)
zbentley•May 23, 2026
> I think it may be north of a decade
Nearly two!
stouset•May 23, 2026
I was better off not knowing that this morning. Might be worth prefixing that tidbit of info with “trigger warning: the unrelenting passage of time”.
HappMacDonald•May 23, 2026
There exist toddlers who were raised on Teletubbies that are now members of Congress
stouset•May 23, 2026
I’m going to have to politely request that you stop this immediately.
jasonlotito•May 23, 2026
TIL The name was changed from a definition list.
Tepix•May 23, 2026
Same here. I like definition list better ;-)
Ancapistani•May 23, 2026
You’re not alone. This is the second time this week I’ve seen that, and thought it was a mistake the first time.
sunshowers•May 23, 2026
Bleh. <b> is apparently now bring attention to. As if.
extra88•May 23, 2026
Eh, it's fine, elements should be defined for what they mean, not what they look like. The explanation and distinctions made between <b> and other elements (<i>, <em>, <strong>) make sense.
The suggested (not obligatory) user agent styling for <b> is `font-weight: bolder` an agent or authors could use lots of different things to bring attention to what the element contains and treat it differently from <strong>.
The wrapper div is making me a bit sad. These days, using grid layout, you don’t actually need it in most cases
Theodores•May 23, 2026
Absolutely!
I put dl lists in a grid with no divs needed. As MDN says, div is the last resort, invariably there is something better, and nowadays that is grid styling.
New to me is multiple dd's.
For legacy layouts littered with divs and classes, display: contents helps get rid of the div wrappers, promoting whatever is wrapped.
Even with disclosure elements there are ways to avoid div wrappers using the pseudo element for everything enclosed by the details element apart from the summary element.
petepete•May 23, 2026
The problem with 'in most cases' when it comes to a design system that's used in hundreds of different ways across departments and services, is that some week break.
I don't really like the div either (I use the design system all day, and maintain a set of components), but it makes documentation much easier.
gbeardish•May 23, 2026
What about multiple '<dt>' for one or more '<dd>'?
I love DL. I think tables, at least in the past, were misused as DLs even more in the past and the inconvenience of the table markup is even worse than a bunch of divs.
bdcravens•May 23, 2026
You're right, but forcing tables to cosplay as DLs was far from the worst way that tables were abused.
sodapopcan•May 23, 2026
At least <td>s could easily centre things vertically ;)
enriquto•May 23, 2026
It's not that inconvenient if you omit unnecessary closing tags:
<tr>
<td> first
<td> second
<tr>
<td> what
<td> ever
I find it simpler and cleaner than any of the markdown table markups
debesyla•May 23, 2026
Isn't markdown table just a bunch of | ?
zufallsheld•May 23, 2026
That's the problem.
froh•May 23, 2026
most specifically the problem is that markdown tables don't allow breaking the table row in multiple lines
but then you can always use HTML tables in markdown and Pandoc transforms it just fine
jazzypants•May 23, 2026
Every markdown implementation is supposed to allow inline HTML.
hnlmorg•May 23, 2026
<br> has worked fine whenever I’ve needed line breaking in markdown tables
xigoi•May 23, 2026
They mean in the Markdown code, not in the output.
quietbritishjim•May 23, 2026
I think they mean breaking the line in the markup, not the output
myfonj•May 23, 2026
Fair point, though /DT and /DD are also optional just like /TH, /TD and /TR are. So in effect, def…scription list could structurally save you one TR for each entry and two "BLE"s:
I always thought the DL as a single row of a table.
mockbuild•May 23, 2026
it's on archive html5 .flac 16-bit 44.1kHz no <dl> flag.
tln•May 23, 2026
> Admittedly, however, support for the <dl> element is not yet universal.
Wait what? <DL> has been in HTML since.. the first draft in 1993!
I like DL's but they can be challenging to style. This article is using a lot of fixed pixel widths which would break on really small screens or larger data.
3eb7988a1663•May 23, 2026
Granted, I do not know what I am doing with CSS, but the Character Sheet example seems standard flexible elements?
I've found CSS Grid is extremely useful for styling DLs.
extra88•May 23, 2026
Well, it took about a decade for web standards to become a real thing and a lot longer for Web Platform Tests to come to be. Still, while there are lots of tests for DOM construction and visual rendering, testing construction of the accessibility tree is lacking (also keyboard interaction testing).
And that's just for browsers, there's no shared spec for the operating system accessibility APIs the browsers' accessibility tree has to be translated into or how screen readers (and other assistive technologies) will use the OS's APIs.
smitty1e•May 23, 2026
This seems a clear enough win for things that would fit into a simple python dictionary.
Why is it preferred over <table> for laying out columns via a the character attributes at the bottom of TFA?
jimbosis•May 23, 2026
The world's first website makes heavy use of <dl>s.
https://info.cern.ch/ (A landing page of sorts to give context and orientation about the actual first website.)
chrismorgan•May 23, 2026
> <dl aria-label="Ability Scores">
This is incorrect:
1. <dl> has no corresponding (viz. implicit) role, but can be given the role group, list, none or presentation <https://w3c.github.io/html-aria/#el-dl>.
They’re not name–value pairs, they’re name–value groups.
redmatter•May 23, 2026
Wow I have never noticed that, thanks for the heads up! Out of curiosity, would you put `role="listitem"` on `<div>` elements that wrap the `<dt>` && `<dd>` elements? It looks like `role="listitem"` is allowed on the `<dt>` element, but that doesn't feel like it would be accurate in the case where multiple `<dt>` elements are grouped together, and I'm not sure if that would mess with how the element is interpreted natively as as term.
chrismorgan•May 23, 2026
I know the fundamentals of this sort of thing, but I haven’t done much practical with it, so I don’t feel that I can comment on this point.
brewmarche•May 23, 2026
Your comment put me on a side quest to research the differences between i.e., e.g., viz. and sc. and I have to admit that I’m still not 100% sure
I need to learn more about web accessibility, but if you completely ignore it (and other sane practices) HTML looks really simple.
I think the design of HTML is just too much. There’s so many tags that don’t do much. It’s like w3c decided that any common thing people use in websites needs a tag. The end result is more and more tags…
Can anyone convince me otherwise? It screams design red-flags to me.
PS: I love the web and think it’s the best platform and future platform we have at the moment. It’s just quirky and loves not breaking old websites!
shermantanktop•May 23, 2026
Oh that’s great. It’s an opinionated view that focused strictly on the behavior of the tags wrt layout and appearance.
I’ve noticed that discussions of semantic meaning of tags often contain the word “feel.” Nothing wrong with that, taste matters, but it does point to the non-functional goals that are being pursued when people disagree.
<ol> vs <ul> - they are both ordered, because markup is ordered. One gets decorated differently than the other by default. Is the difference semantic or typographical?
bulatb•May 23, 2026
A <ul> is a list of things whose order makes no difference to its meaning. Rearranging a <ul> would change the presentation, not the information. Rearranging an <ol> would change both.
<ul> Players
<li> Alice
<li> Bob
<li> Carol
</ul>
<ol> Leaderboard
<li> Bob
<li> Alice
<li> Carol
</ol>
extra88•May 23, 2026
lol, you should actually read the HTML spec, there are good explanations of all the elements. The whole point of defining semantics is that elements have meaning *independent of their default appearance (or any appearance).
> I need to learn more about web accessibility, but if you completely ignore it (and other sane practices) HTML looks really simple.
Everything looks really simple when you ignore vast amounts of the subject and nuance.
Your rules don't mention keyboard or focus behavior, the only mention of either is the association between <label> and its <input>. <output> does have functionality, it's an HTML-native ARIA live region (that can be associated with a <label>).
We've always used this in our ebooks for abbreviation and glossary lists. The problem I've always had is that you need to use a bit of css to make two lined-up columns. I've done it with floats. Now, some ebook readers will support grid and flex-box, which give better results, but the Kindle still does not. Kindle is sort of the IE6 of the ebook world.
kqp•May 23, 2026
This is going to be unpopular here, but life became easier when I quit trying to write semantic HTML. It’s just poorly designed, I’m sorry. Every time I’ve reached for a <dl> I’ve eventually regretted it because I wanted multiple levels of wrappers, or a divider between sections, or an icon, or a heading spanning multiple key-value pairs, etc. They make this stuff with some flexibility but nowhere near enough to actually cover the generalized concept it purports to. I still use the corresponding elements when there are observable benefits, of course, like <button>, <h1>, etc, but when all it’s going to do is not quite fit the data model and force me to override everything, it’s just not a practical choice.
It shouldn’t be so controversial to say that if 99% of usage routes around your API, it’s probably the API’s fault.
halapro•May 23, 2026
Sounds like it's CSS' fault then. I think that just like they introduced `display:contents` to remove wrappers, they should also introduce a way to group elements as if they had a common ancestor.
Good idea. Together with ::after / ::before and content: (which can insert text into the website) it might then be possible to create a website without any HTML, only CSS.
WorldMaker•May 23, 2026
With CSS Grid math you can fake it, at least. If your DL is `display: grid;` and if you have a few extra DIVs lying around at the bottom of the DL to be borders around combined cells you just have to math which rows/columns you want to draw a border around and make the div fit that combined shape.
miki123211•May 23, 2026
As a person who daily drives a screen reader, I so agree with this.
We'd all be better off if the W3 dispensed with all that ideological semantic purity BS and started doing more realpolitik. Think not about whether your API is semantically pure, but about what developers want to do, what hacks they'll use to achieve their goals despite your objections, and how to enable doing those things in a way that is maximally beneficial to everyone involved.
ARIA live regions are the perfect example. What developers actually want is `document.speakText`. What developers actually have is a weird API that announces text on the page as it changes. They have to bridge from one to the other, which is difficult and hacky, even when implemented well. But hey, at least that live region approach is semantically pure HTML...
SebastianKra•May 23, 2026
I don't want that. I don't want to care about screen readers (unfortunately I have to). I want a system where I can pick well-defined rules and then css can style it, screen readers will understand it, automations can parse it, keyboard navigation is free.
Obviously thats not what we got, but I feel like the set of established UI patterns is manageable enough that it could be built.
A great example is the new <select> styling that developers styled in all kinds of creative ways. Now give me that for comboboxes, trees, data-grids etc...
extra88•May 23, 2026
There are already well-defined rules, you just don't like some of the rules, e.g. you can't (today) style <select> options. Keyboard navigation is free as long as you follow the rules about which elements are focusable.
You shouldn't have to care about screen readers the same as you shouldn't have to care which browser someone uses but you always have to care about people; people who can't see or hear what you create, people who can operate a keyboard (or keyboard-equivalent) but not a mouse or touchscreen, people who can use a touchscreen but not a physical keyboard, etc.
extra88•May 23, 2026
Good news! `.ariaNotify()` is basically a real implementation of your hypothetical document.speakText.
It always bugs me that the naming of the element does not seem to really fit examples like „Author: Tolkien“. It‘s not that _Tolkien“_ „defines“ the „term“ _Author_ right? The elements are still used for key-value-lists and no one seems to notice or comment on this issue.
Am I the only one?
WorldMaker•May 23, 2026
As the article points out, HTML5 softened the name from "definition list" to "description list" to move it a bit away from thinking of it as a "dictionary" definition and somewhat better reflect how it has always been used.
gabriela_c•May 23, 2026
I loved the character sheet example! Fun!
gste•May 23, 2026
I've been following roadmap.sh, and while it's not a comprehensive learning resource, it does help close obvious knowledge gaps. As it happens I was just reading about this.
List history (listory?) lesson, kids: As the link below to a 1985 IBM mainframe DCF/GML manual shows, DL-DT-DD have been a thing since before the web. In addition to Definition lists (DL), the 40+ year-old documentation describes Glossary lists (GL), Ordered lists (OL), Unordered lists (UL), and Simple lists (SL).
ibm :: 370 :: DCF :: SH35-0050-2 Document Composition Facility Generalized Markup Language Implementation Guide Rel 3 Mar85
24 Comments
> Description list support continues to be generally good (with VoiceOver still the outlier), even if you may not like how it is supported.
You shouldn't try to fix this kind of thing by mangling the HTML, since (1) users tend to be used to their screen reader's quirks, and (2) in situations like these, making it juuuust right in one screen reader is likely to make it incomprehensible in another. But it is important to be aware of these quirks, so you don't accidentally design an interface that relies on less-quirky behaviour.
https://html.spec.whatwg.org/multipage/grouping-content.html...
https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/...
EDIT everyone replied at once lol. I'm surprised too about div.
Also, screen reader support: https://a11ysupport.io/tech/html/dl_element
Somehow, people got convinced that <div> elements are evil and should never be used no matter what. Yes, you should use a more semantic element when it makes sense, but try to remember what that phrase actually means.
However, "semantic elements" became popular shortly after the push for the "semantic web" which was entirely based around making the web easier to process for machines. Many of the original sources talk about how it's easier to digest for humans too, but that's just a happy byproduct.
https://www.w3.org/DesignIssues/Semantic.html
https://www.lassila.org/publications/2001/SciAm.pdf
https://informationr.net/ir/7-4/paper134.html
https://jonchristopher.us/blog/a-semantic-breakdown-of-resta...
https://shapeshed.com/the-importance-of-semantic-markup/
https://www.w3.org/TR/html-design-principles/
https://microformats.org/wiki/posh
<my-element> != <div>
[1] https://developer.mozilla.org/en-US/docs/Web/API/Web_compone...
[2] https://developer.mozilla.org/en-US/docs/Web/API/HTMLDivElem...
The use of HTMLElement and HTMLUnknownElement for the non-standard elements is to support future additions to the standard elements and enable subclassing down-tree instead of across-tree, which is noted in the spec.
For example in XHTML you can use custom elements as table rows or cells (provided you give them the correct role and CSS display property). This is because XHTML does not modify the tree during parsing, unlike HTML which will hoist out custom element children of the table to the table's parent.
TIL I’ve been naming it wrong for a decade.
Nearly two!
The suggested (not obligatory) user agent styling for <b> is `font-weight: bolder` an agent or authors could use lots of different things to bring attention to what the element contains and treat it differently from <strong>.
https://html.spec.whatwg.org/multipage/text-level-semantics....
https://html.spec.whatwg.org/multipage/rendering.html#phrasi...
I.e. can we do
https://html.spec.whatwg.org/#the-dd-element
https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/...
[1] https://validator.w3.org/nu/?showsource=yes&showoutline=yes&...
And... it also uses the wrapper div for styling
I put dl lists in a grid with no divs needed. As MDN says, div is the last resort, invariably there is something better, and nowadays that is grid styling.
New to me is multiple dd's.
For legacy layouts littered with divs and classes, display: contents helps get rid of the div wrappers, promoting whatever is wrapped.
Even with disclosure elements there are ways to avoid div wrappers using the pseudo element for everything enclosed by the details element apart from the summary element.
I don't really like the div either (I use the design system all day, and maintain a set of components), but it makes documentation much easier.
but then you can always use HTML tables in markdown and Pandoc transforms it just fine
Wait what? <DL> has been in HTML since.. the first draft in 1993!
I like DL's but they can be challenging to style. This article is using a lot of fixed pixel widths which would break on really small screens or larger data.
Some of the extracted CSS chunks
And that's just for browsers, there's no shared spec for the operating system accessibility APIs the browsers' accessibility tree has to be translated into or how screen readers (and other assistive technologies) will use the OS's APIs.
Why is it preferred over <table> for laying out columns via a the character attributes at the bottom of TFA?
https://info.cern.ch/hypertext/WWW/TheProject.html
https://info.cern.ch/ (A landing page of sorts to give context and orientation about the actual first website.)
This is incorrect:
1. <dl> has no corresponding (viz. implicit) role, but can be given the role group, list, none or presentation <https://w3c.github.io/html-aria/#el-dl>.
2. You’re only allowed to define aria-label on elements that have a compatible role, implicit or explicit <https://w3c.github.io/html-aria/#docconformance-naming>.
3. aria-label is allowed on all but a handful of roles <https://www.w3.org/TR/wai-aria-1.2/#aria-label>, which in this case knocks out presentation and none, leaving group and list.
4. group doesn’t feel right, list feels acceptable.
In summary: either ditch the aria-label, or add role="list" (meaning also role="listitem" on children).
—⁂—
One thing the article misses is that you can have multiple <dt> in a row too, not just <dd>. The spec has a good example: https://html.spec.whatwg.org/multipage/grouping-content.html...
They’re not name–value pairs, they’re name–value groups.
I dunno, I guess I’m a caveman. If it looks right and works (including accessibility) then I figure I’m pursuing something that doesn’t matter a lot.
I need to learn more about web accessibility, but if you completely ignore it (and other sane practices) HTML looks really simple.
I think the design of HTML is just too much. There’s so many tags that don’t do much. It’s like w3c decided that any common thing people use in websites needs a tag. The end result is more and more tags…
Can anyone convince me otherwise? It screams design red-flags to me.
PS: I love the web and think it’s the best platform and future platform we have at the moment. It’s just quirky and loves not breaking old websites!
I’ve noticed that discussions of semantic meaning of tags often contain the word “feel.” Nothing wrong with that, taste matters, but it does point to the non-functional goals that are being pursued when people disagree.
<ol> vs <ul> - they are both ordered, because markup is ordered. One gets decorated differently than the other by default. Is the difference semantic or typographical?
> I need to learn more about web accessibility, but if you completely ignore it (and other sane practices) HTML looks really simple.
Everything looks really simple when you ignore vast amounts of the subject and nuance.
Your rules don't mention keyboard or focus behavior, the only mention of either is the association between <label> and its <input>. <output> does have functionality, it's an HTML-native ARIA live region (that can be associated with a <label>).
https://html.spec.whatwg.org/multipage/
It shouldn’t be so controversial to say that if 99% of usage routes around your API, it’s probably the API’s fault.
We'd all be better off if the W3 dispensed with all that ideological semantic purity BS and started doing more realpolitik. Think not about whether your API is semantically pure, but about what developers want to do, what hacks they'll use to achieve their goals despite your objections, and how to enable doing those things in a way that is maximally beneficial to everyone involved.
ARIA live regions are the perfect example. What developers actually want is `document.speakText`. What developers actually have is a weird API that announces text on the page as it changes. They have to bridge from one to the other, which is difficult and hacky, even when implemented well. But hey, at least that live region approach is semantically pure HTML...
Obviously thats not what we got, but I feel like the set of established UI patterns is manageable enough that it could be built.
A great example is the new <select> styling that developers styled in all kinds of creative ways. Now give me that for comboboxes, trees, data-grids etc...
You shouldn't have to care about screen readers the same as you shouldn't have to care which browser someone uses but you always have to care about people; people who can't see or hear what you create, people who can operate a keyboard (or keyboard-equivalent) but not a mouse or touchscreen, people who can use a touchscreen but not a physical keyboard, etc.
https://developer.mozilla.org/en-US/docs/Web/API/Element/ari...
Am I the only one?
https://roadmap.sh/html (see "Definition lists")
ibm :: 370 :: DCF :: SH35-0050-2 Document Composition Facility Generalized Markup Language Implementation Guide Rel 3 Mar85
https://archive.org/details/bitsavers_ibm370DCFSpositionFaci...