bootswatch-sass/bootswatch/bower_components/bootstrap/less/mixins/tab-focus.less

Bootswatch is a collection of themes for Bootstrap. SASS / SCSS edition

// WebKit-style focus

.tab-focus() {
  // Default
  outline: thin dotted;
  // WebKit
  outline: 5px auto -webkit-focus-ring-color;
  outline-offset: -2px;
}