SemanSemantic-UItic-UI/dist/components/tab.css

 /*
 * # Semantic UI
 * https://github.com/Semantic-Org/Semantic-UI
 * http://www.semantic-ui.com/
 *
 * Copyright 2014 Contributors
 * Released under the MIT license
 * http://opensource.org/licenses/MIT
 *
 */



/*******************************
           UI Tabs
*******************************/

.ui.tab {
  display: none;
}


/*******************************
             States
*******************************/


/*--------------------
       Active
---------------------*/

.ui.tab.active,
.ui.tab.open {
  display: block;
}

/*--------------------
       Loading
---------------------*/

.ui.tab.loading {
  position: relative;
  overflow: hidden;
  display: block;
  min-height: 250px;
}
.ui.tab.loading * {
  position: relative !important;
  left: -10000px !important;
}
.ui.tab.loading:before,
.ui.tab.loading.segment:before {
  position: absolute;
  content: '';
  top: 100px;
  left: 50%;
  margin: -1.25em 0em 0em -1.25em;
  width: 2.5em;
  height: 2.5em;
  border-radius: 500rem;
  border: 0.2em solid rgba(0, 0, 0, 0.1);
}
.ui.tab.loading:after,
.ui.tab.loading.segment:after {
  position: absolute;
  content: '';
  top: 100px;
  left: 50%;
  margin: -1.25em 0em 0em -1.25em;
  width: 2.5em;
  height: 2.5em;
  -webkit-animation: button-spin 0.6s linear;
          animation: button-spin 0.6s linear;
  -webkit-animation-iteration-count: infinite;
          animation-iteration-count: infinite;
  border-radius: 500rem;
  border-color: #aaaaaa transparent transparent;
  border-style: solid;
  border-width: 0.2em;
  box-shadow: 0px 0px 0px 1px transparent;
}


/*******************************
         Tab Overrides
*******************************/



/*******************************
        User Overrides
*******************************/