border-inline-start
A shorthand for setting the width, style, and color of the 'start' side border in the inline dimension. It's the logical equivalent of styling a left border.
Quick example
.callout {
/* Logical equivalent of border-left */
border-inline-start: 5px solid #6366f1;
padding-inline-start: 1.5rem;
background: #f5f3ff;
} Quick facts
Initial value
See individual propertiesInherited
No
Applies to
all elements
Values
border-top-widthborder-top-style border-inline-start Browser Support
Widely available Since 2021 95% global usage
This feature is well established and works across many devices and browser versions. It has been available across browsers since 2021.
Safe to use without fallbacks.
69+
41+
12.1+
79+