style.css

@media only screen and (min-width: 25em) {
  body:after {
    content: "bp-small";
    display: none;
  }
}
@media only screen and (min-width: 35em) {
  body:after {
    content: "bp-medium";
    display: none;
  }
}
@media only screen and (min-width: 65em) {
  body:after {
    content: "bp-large";
    display: none;
  }
}

html {
  height: 100%;
  -webkit-transform-style: preserve-3d;
          transform-style: preserve-3d;
}

body {
  margin: 0;
  text-align: center;
  font-size: 4vw;
  font-family: sans-serif;
  background: #E33D61;
  color: #FFFFFF;
  text-transform: uppercase;
  position: relative;
  top: 50%;
  -webkit-transform: translateY(-50%);
      -ms-transform: translateY(-50%);
          transform: translateY(-50%);
  font-weight: normal;
}

span {
  display: block;
  color: #812236;
  font-weight: bold;
  font-size: 5.5vw;
}