.x-tab {
  display: inline-block;
  height: 100%;
  min-width: 90px;
  padding: 0 16px;
  text-align: center;
  vertical-align: top;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
  cursor: pointer;
}
.x-tab--disabled {
  opacity: 0.6;
  pointer-events: none;
}