.pace {
  position: fixed;
  width: 100%;
  height: 2px;
  z-index: 9999;
  visibility: visible;
  opacity: 1;
  top: 0;
  left: 0;
}
.pace:before {
  content: '';
  display: block;
  width: 100%;
  height: 2px;
  background-color: rgba(255, 255, 255, 0.7);
  position: absolute;
}
.pace-inactive {
  visibility: hidden;
  opacity: 0;
  transition: all 5s;
  -webkit-transition: all 5s;
  -moz-transition: all 5s;
  -ms-transition: all 5s;
  -o-transition: all 5s;
}
.pace-progress {
  height: 4px;
  z-index: 2;
  position: relative;
  transition: all 0.2s;
}
.pace-activity {
  display: none;
}