border-end-start-radius
Rounds the corner where the 'end' of the block dimension meets the 'start' of the inline dimension (bottom-left in LTR). Like all logical properties, it adapts to the text direction.
Quick example
aside {
/* Rounds the logical bottom-left corner */
border-end-start-radius: 12px;
padding: 1rem;
background: #f8fafc;
} Quick facts
Initial value
0Inherited
No
Applies to
all elements (UAs not required when collapse)
Animation type
lpc
Values
border-top-left-radius border-end-start-radius 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.
89+
66+
15+
89+