body {
  text-align: center;
  background: #eee;
  font-family: sans-serif;
  font-weight: 100;
  font-family: DM Sans, Arial, Helvetica, sans-serif;
  margin: 0;
  padding: 0;
}
body:before {
  background-color: #4fffc8;
  content: '';
  display: block;
  position: absolute;
  bottom: 0;
  left: 0;
  height: 100%;
  transform: translateX(-50%);
  min-width: 100vw;
  z-index: -1;
}
body:after {
  content: '';
  display: block;
  position: absolute;
  mask-position: bottom;
  bottom: 0;
  left: 50%;
  height: 100%;
  transform: translateX(-50%);
  min-width: 100vw;
  z-index: -1;
  background-size: 16rem;
  background-image: none;
  background-color: #fff;
  -webkit-mask: url(houndstooth.svg);
  -webkit-mask-repeat: repeat-x;
  -webkit-mask-size: 10rem;
  -webkit-mask-position: center calc(100% + 3.8rem);
  mask: url(houndstooth.svg);
  mask-repeat: repeat-x;
  mask-size: 10rem;
  mask-position: center calc(100% + 3.8rem);
}

p,
#message {
  font-size: 2rem;
}

h1 {
  font-weight: 100;
  font-size: 5vw;
  margin: 0;
  color: #fff;
  padding: 25px 0 5px;
}

hr {
  margin-bottom: 25px;
}

#clockdiv {
  font-family: 'Orbitron', sans-serif;
  color: #fff;
  display: inline-block;
  font-weight: 100;
  text-align: center;
  font-size: 30px;
  margin-bottom: 2rem;
}

#clockdiv > div {
  padding: 10px;
  border: 0.5rem solid #fff;
  border-radius: 3px;
  background: #fdf413;
  display: inline-block;
  text-shadow: 4px 4px 0.3em #000;
}

#clockdiv div > span {
  padding: 5vh;
  border-radius: 3px;
  display: inline-block;
  line-height: 20vh;
  height: 20vh;
  font-size: 20vh;
  width: 35vh;
  text-align: center;
}

.smalltext {
  padding-top: 5px;
  font-size: 8vh;
}
body.red h1,
body.red #clockdiv span {
  animation: blink 1s infinite;
}

@-webkit-keyframes blink {
  0%,
  24% {
    background-color: rgb(117, 209, 63);
    border: 3px solid #e50000;
  }
  25%,
  49% {
    background-color: rgb(17, 09, 243);
    border: 3px solid #e50000;
  }
  50%,
  74% {
    background-color: rgb(217, 9, 63);
    border: 3px solid #e50000;
  }
  75%,
  100% {
    background-color: #e50000;
    border: 3px solid rgb(217, 209, 63);
  }
}