An Adobe Commerce developer is customizing buttons for a custom theme that inherits Magento/blank theme and needs to override the default values…

To

find

the

default

values

for

the

buttons,

the

developer

needs

to

look

at

the

lib/web/css/source/lib/_buttons.less file. This file contains various variables, mixins, and styles for

defining and customizing buttons. The developer can override these values in their custom theme by

using the .lib-button() mixin or by creating their own mixins or classes. For example:

.lib-button( @_button-selector, @_button-type, @_button-shape, @_button-color, @_button-

background, @_button-border, @_button-text-transform, @_button-box-shadow, @_button-hover-

color, @_button-hover-background, @_button-hover-border, @_button-hover-box-shadow );

The lib/web/less/source/lib/_buttons.less and lib/web/css/source/lib/_button.less files are not valid

and do not exist. Reference: [Buttons], [Magento UI library]