43 lines
1.7 KiB
Markdown
43 lines
1.7 KiB
Markdown
---
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title: Pretty text underline
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tags: visual
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---
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A nicer alternative to `text-decoration: underline` or `<u></u>` where descenders do not clip the underline.
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Natively implemented as `text-decoration-skip-ink: auto` but it has less control over the underline.
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```html
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<p class="pretty-text-underline">Pretty text underline without clipping descending letters.</p>
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```
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```css
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.pretty-text-underline {
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display: inline;
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text-shadow: 1px 1px #f5f6f9, -1px 1px #f5f6f9, -1px -1px #f5f6f9, 1px -1px #f5f6f9;
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background-image: linear-gradient(90deg, currentColor 100%, transparent 100%);
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background-position: bottom;
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background-repeat: no-repeat;
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background-size: 100% 1px;
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}
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.pretty-text-underline::-moz-selection {
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background-color: rgba(0, 150, 255, 0.3);
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text-shadow: none;
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}
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.pretty-text-underline::selection {
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background-color: rgba(0, 150, 255, 0.3);
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text-shadow: none;
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}
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```
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#### Explanation
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1. `text-shadow` uses 4 values with offsets that cover a 4x4 px area to ensure the underline has a "thick" shadow that covers the line where descenders clip it. Use a color that matches the background. For a larger font, use a larger `px` size. Additional values can create an even thicker shadow, and subpixel values can also be used.
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2. `background-image: linear-gradient(...)` creates a 90deg gradient using the text color (`currentColor`).
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3. The `background-*` properties size the gradient as 100% of the width of the block and 1px in height at the bottom and disables repetition, which creates a 1px underline beneath the text.
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4. The `::selection` pseudo selector rule ensures the text shadow does not interfere with text selection.
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#### Browser support
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- https://caniuse.com/#feat=css-textshadow
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- https://caniuse.com/#feat=css-gradients
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