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csslayout/contents/tooltip.md
2022-09-21 14:31:37 +07:00

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---
layout: layouts/post.njk
title: Tooltip
description: Create a tooltip with CSS
keywords: css tooltip
---
## HTML
```html
<div class="tooltip">
<!-- The tooltip content -->
<div class="tooltip__content">
...
</div>
<!-- The tooltip arrow -->
<div class="tooltip__arrow"></div>
<!-- The trigger element -->
...
</div>
```
## CSS
```css
.tooltip {
/* Used to position the arrow */
position: relative;
}
/* Show the arrow and content and restore pointer events when hovering the trigger element */
.tooltip:hover .tooltip__arrow,
.tooltip:hover .tooltip__content {
opacity: 1;
pointer-events: initial;
}
.tooltip__arrow {
/* Invisible by default */
opacity: 0;
/* To prevent accidental interactions with other elements */
pointer-events: none;
/* Border */
border: 0.5rem solid transparent;
border-top-color: #111827;
/* Position */
bottom: 100%;
left: 50%;
position: absolute;
transform: translate(-50%, 8px);
/* Zero size */
height: 0;
width: 0;
/* Displayed on top of other element */
z-index: 10;
}
.tooltip__content {
/* Invisible by default */
opacity: 0;
/* To prevent accidental interactions with other elements */
pointer-events: none;
/* Background color, must be the same as the border color of arrow */
background-color: #111827;
border-radius: 0.25rem;
/* Position */
bottom: 100%;
left: 50%;
position: absolute;
transform: translate(-50%, -8px);
/* Displayed on top of other element */
z-index: 10;
}
```
{% demo %}
{% include "covers/tooltip.njk" %}
{% enddemo %}