twitchtvapp-nicer00ster/bower_components/bootstrap/less/mixins/tab-focus.less

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// WebKit-style focus

.tab-focus() {
  // WebKit-specific. Other browsers will keep their default outline style.
  // (Initially tried to also force default via `outline: initial`,
  // but that seems to erroneously remove the outline in Firefox altogether.)
  outline: 5px auto -webkit-focus-ring-color;
  outline-offset: -2px;
}