45 lines
1.4 KiB
Markdown
45 lines
1.4 KiB
Markdown
---
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title: Popout menu
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tags: interactivity
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---
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Reveals an interactive popout menu on hover and focus.
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```html
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<div class="reference" tabindex="0"><div class="popout-menu">Popout menu</div></div>
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```
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```css
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.reference {
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position: relative;
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background: tomato;
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width: 100px;
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height: 100px;
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}
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.popout-menu {
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position: absolute;
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visibility: hidden;
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left: 100%;
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background: #333;
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color: white;
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padding: 15px;
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}
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.reference:hover > .popout-menu,
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.reference:focus > .popout-menu,
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.reference:focus-within > .popout-menu {
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visibility: visible;
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}
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```
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#### Explanation
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1. `position: relative` on the reference parent establishes a Cartesian positioning context for its child.
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2. `position: absolute` takes the popout menu out of the flow of the document and positions it in relation to the parent.
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3. `left: 100%` moves the the popout menu 100% of its parent's width from the left.
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4. `visibility: hidden` hides the popout menu initially and allows for transitions (unlike `display: none`).
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5. `.reference:hover > .popout-menu` means that when `.reference` is hovered over, select immediate children with a class of `.popout-menu` and change their `visibility` to `visible`, which shows the popout.
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6. `.reference:focus > .popout-menu` means that when `.reference` is focused, the popout would be shown.
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7. `.reference:focus-within > .popout-menu` ensures that the popout is shown when the focus is _within_ the reference.
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#### Browser support
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