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30-seconds-of-code/snippets/pretty-text-underline.md
Angelos Chalaris 4d6d6a33ad Merge pull request #96 from dreambo8563/patch-1
add u tag as another alternative
2018-10-27 11:30:42 +03:00

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### Pretty text underline
A nicer alternative to `text-decoration: underline` or `<u></u>` where descenders do not clip the underline.
Natively implemented as `text-decoration-skip-ink: auto` but it has less control over the underline.
#### HTML
```html
<p class="pretty-text-underline">Pretty text underline without clipping descending letters.</p>
```
#### CSS
```css
.pretty-text-underline {
display: inline;
text-shadow: 1px 1px #f5f6f9, -1px 1px #f5f6f9, -1px -1px #f5f6f9, 1px -1px #f5f6f9;
background-image: linear-gradient(90deg, currentColor 100%, transparent 100%);
background-position: bottom;
background-repeat: no-repeat;
background-size: 100% 1px;
}
.pretty-text-underline::-moz-selection {
background-color: rgba(0, 150, 255, 0.3);
text-shadow: none;
}
.pretty-text-underline::selection {
background-color: rgba(0, 150, 255, 0.3);
text-shadow: none;
}
```
#### Demo
#### Explanation
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.
2. `background-image: linear-gradient(...)` creates a 90deg gradient using the
text color (`currentColor`).
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.
4. The `::selection` pseudo selector rule ensures the text shadow does not interfere with text
selection.
#### Browser support
<span class="snippet__support-note">✅ No caveats.</span>
- https://caniuse.com/#feat=css-textshadow
- https://caniuse.com/#feat=css-gradients
<!-- tags: visual -->