header [role="progressbar"][aria-busy="true"] {
  position: absolute;
  top: 0;
  left: 0;
  padding-top: 8px;
  width: 100%;
  background-color: #bd0404;
  -webkit-animation: preloader-background linear 12s infinite;
          animation: preloader-background linear 12s infinite;
}
header [role="progressbar"][aria-busy="true"]::before, header [role="progressbar"][aria-busy="true"]::after {
  display: block;
  position: absolute;
  top: 0;
  z-index: 2;
  width: 0;
  height: 8px;
  background: #afa;
  -webkit-animation: preloader-front linear 12s infinite;
          animation: preloader-front linear 12s infinite;
  content: '';
}
header [role="progressbar"][aria-busy="true"]::before {
  right: 50%;
}
header [role="progressbar"][aria-busy="true"]::after {
  left: 50%;
}

@-webkit-keyframes preloader-background {
  0%, 24.9% {
    background-color: #000;
  }
  25%, 49.9% {
    background-color: #bd0404;
  }
  50%, 74.9% {
    background-color: #8a0202;
  }
  75%, 100% {
    background-color: #510101;
  }
}

@keyframes preloader-background {
  0%, 24.9% {
    background-color: #000;
  }
  25%, 49.9% {
    background-color: #bd0404;
  }
  50%, 74.9% {
    background-color: #8a0202;
  }
  75%, 100% {
    background-color: #510101;
  }
}
@-webkit-keyframes preloader-front {
  0% {
    width: 0;
    background-color: #bd0404;
  }
  24.9% {
    width: 50%;
    background-color: #bd0404;
  }
  25% {
    width: 0;
    background-color: #8a0202;
  }
  49.9% {
    width: 50%;
    background-color: #8a0202;
  }
  50% {
    width: 0;
    background-color: #510101;
  }
  74.9% {
    width: 50%;
    background-color: #510101;
  }
  75% {
    width: 0%;
    background-color: #000;
  }
  100% {
    width: 50%;
    background-color: #000;
  }
}
@keyframes preloader-front {
  0% {
    width: 0;
    background-color: #bd0404;
  }
  24.9% {
    width: 50%;
    background-color: #bd0404;
  }
  25% {
    width: 0;
    background-color: #8a0202;
  }
  49.9% {
    width: 50%;
    background-color: #8a0202;
  }
  50% {
    width: 0;
    background-color: #510101;
  }
  74.9% {
    width: 50%;
    background-color: #510101;
  }
  75% {
    width: 0%;
    background-color: #000;
  }
  100% {
    width: 50%;
    background-color: #000;
  }
}
* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -webkit-flex-direction: column;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: center;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
}


main {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -webkit-flex-direction: column;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: center;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
      -ms-flex-pack: center;
          justify-content: center;
  padding: 0px;
  -webkit-box-flex: 1;
  -webkit-flex-grow: 1;
      -ms-flex-positive: 1;
          flex-grow: 1;
  text-align: center;
}
:root main > * + * {
  margin-top: 1em;
}