min-height

Sets the minimum height of an element. It prevents the element from becoming shorter than the specified value, which is useful for ensuring a section always has some height even if it's empty.

It is documented as part of the CSS Box Sizing specification.

/* Usage Example */
.hero-section {
  min-height: 80vh;
  display: flex;
  align-items: center;
  /* ensures the hero section always takes up most of the screen */
}

/* Syntax */
min-height: auto;
min-height: length-percentage;
min-height: min-content;
min-height: max-content;
min-height: fit-content;
min-height: calc-size;
min-height: anchor-size;

/* Global values */
min-height: inherit;
min-height: initial;
min-height: revert;
min-height: revert-layer;
min-height: unset;
Widely available Since 2015 96% global usage

This feature is well established and works across many devices and browser versions. It has been available across browsers since 2015.

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