CSS Reference

Quick Reference

The text-decoration-thickness property specifies the thickness of the decoration line.

a {
    text-decoration-thickness: 4px;
}

Default

Default valueauto
Inherited valuesno
Can it be animated?no

These are the allowed values.

ValueDescription
autoThe browser chooses the thickness of the decoration line
from-fontIf a font file contains information about a preferred thickness, use that value; if not, it behaves as auto
length/percentageSpecifies the thickness as a length or %
initialSets this property to its default value
inheritInherits this property from its parent element

Using JavaScript

The HTML element can also be styled using JavaScript and the element’s id.

document.getElementById('my_link').style.textDecorationThickness = '4px';
<button onclick='my_function()'>Click Here</button>

<script>
function my_function() {
    document.getElementById('my_link').style.textDecorationThickness = '4px';
}
</script>

CSS Notes:


We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.