border-block-style
Sets the line style for both block-dimension borders (top and bottom) with one declaration. Using 'solid' is the most common way to define these boundaries.
Quick example
.content-block {
border-block-style: solid;
border-block-width: 1px;
border-block-color: #ccc;
} Quick facts
Initial value
noneInherited
No
Applies to
all elements
Animation type
discrete
Values
border-top-style border-block-style 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.
87+
66+
14.1+
87+