CSS margin-bottom Property

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.example {
  margin-bottom: 100px;

Hello World!


The margin-bottom property sets an element’s bottom margin.

A positive value places it farther from its neighbors, while a negative value places it closer.

Default value:0
JavaScript syntax:

Standard Syntax

margin-bottom: length|auto|%|initial|inherit|revert|revert-layer|unset;

Browser Support

The numbers in the table specify the first browser version that fully supports the property.


Property Values

The following table describes the values of this property.

Value Description
length Specifies a fixed bottom margin in px, cm, em, etc. Default value is 0. Negative values are allowed.
auto The browser calculates a bottom margin.
%(percentage) Specifies a bottom margin in percent of the width of the containing element.
initial Sets this property to its default value.
inherit If specified, the associated element takes the computed value of its parent element animation-delay property.
revert Reverts the cascaded value of the property from its current value to the value the property
revert-layer Rollback styles to the ones specified in previous cascade layers.
unset Resets a property to its inherited value if the property naturally inherits from its parent, and to its initial value if not.

Default CSS Property Values

selectors {
  margin-bottom: 0;
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