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Arrow to the bottom of the tooltip with CSS
In CSS, you can create a tooltip with an arrow pointing to the bottom by using the ::after pseudo-element to generate a triangular shape. This is achieved by manipulating border properties to create the arrow effect.
Syntax
.tooltip .tooltip-text::after {
content: "";
position: absolute;
top: 100%;
left: 50%;
margin-left: -border-width;
border-width: size;
border-style: solid;
border-color: tooltip-color transparent transparent transparent;
}
Example
The following example demonstrates how to create a tooltip with an arrow pointing to the bottom −
<!DOCTYPE html>
<html>
<head>
<style>
.mytooltip {
position: relative;
display: inline-block;
margin-top: 80px;
cursor: pointer;
background-color: #f0f0f0;
padding: 10px;
border-radius: 4px;
}
.mytooltip .mytext {
visibility: hidden;
width: 140px;
background-color: #333;
color: #fff;
text-align: center;
border-radius: 6px;
padding: 8px;
position: absolute;
z-index: 1;
bottom: 100%;
left: 50%;
margin-left: -70px;
margin-bottom: 10px;
font-size: 14px;
}
.mytooltip .mytext::after {
content: "";
position: absolute;
top: 100%;
left: 50%;
margin-left: -8px;
border-width: 8px;
border-style: solid;
border-color: #333 transparent transparent transparent;
}
.mytooltip:hover .mytext {
visibility: visible;
}
</style>
</head>
<body>
<div class="mytooltip">Hover over me
<span class="mytext">Tooltip with bottom arrow!</span>
</div>
</body>
</html>
A gray box with "Hover over me" text appears. When you hover over it, a dark tooltip with white text "Tooltip with bottom arrow!" appears above the box with a small triangular arrow pointing downward from the bottom center of the tooltip.
How It Works
The arrow is created using the ::after pseudo-element with these key properties:
- content: "" − Creates an empty pseudo-element
- border-color − Only the top border has color, others are transparent
- border-width − Determines the arrow size
- top: 100% − Positions the arrow at the bottom of the tooltip
- left: 50% with margin-left − Centers the arrow horizontally
Conclusion
Creating a tooltip with a bottom-pointing arrow involves using CSS pseudo-elements and border manipulation. The ::after element generates the triangular arrow shape by utilizing transparent borders.
Updated on: 2026-03-15T12:29:03+05:30
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