border-inline-start-color
Sets the color of the 'start' side of the inline dimension (usually the left border). It allows for easier localization without writing direction-specific overrides.
Quick example
.note-box {
/* Adds a subtle blue line on the logical starting side */
border-inline-start-color: #3b82f6;
border-inline-start-style: solid;
border-inline-start-width: 4px;
}Quick facts
Initial value
currentcolorInherited
No
Applies to
all elements
Animation type
byComputedValueType
Values
border-top-color border-inline-start-color 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+