@salesforce-ux/design-system/css/button-icons/base/touch.css

Salesforce Lightning Design System

/*! Lightning Design System 2.12.0 */
@charset "UTF-8";
.slds-button_icon,
.slds-button_icon-inverse,
.slds-button_icon-container,
.slds-button_icon-border,
.slds-button_icon-border-filled,
.slds-button_icon-border-inverse,
.slds-button_icon-more,
.slds-button_icon-error {
  width: 2.75rem;
  height: 2.75rem;
}

.slds-button_icon-container,
.slds-button_icon-border,
.slds-button_icon-border-filled,
.slds-button_icon-border-inverse,
.slds-button_icon-brand,
.slds-button_icon-more,
.slds-button_icon-container-more {
  width: 2.75rem;
  height: 2.75rem;
}

.slds-button_icon-small {
  width: 2.75rem;
  height: 2.75rem;
}

.slds-button_icon-x-small {
  width: 2.75rem;
  height: 2.75rem;
}

.slds-button_icon-xx-small {
  width: 2.75rem;
  height: 2.75rem;
}

.slds-button_icon-more {
  width: 2.75rem;
  height: 2.75rem;
}