html, body {
  margin: 0;
  background: #000;
  height: 100vh;
  overflow: hidden;
}
body:before, body:after {
  content: '';
  position: absolute;
  z-index: 1;
  top: 50%;
  left: 50%;
  width: 100vw;
  height: 100vh;
  transform: translate(-50%, -50%);
  transform-origin: 0 0;
  mix-blend-mode: hard-light;
  background: linear-gradient(45deg, #e10000, #5200ab);
}
body:after {
  z-index: 2;
  content: 'LIVE';
  font-family: 'Montserrat', sans-serif;
  mix-blend-mode: soft-light;
  background: none;
  color: #fff;
  font-size: 20px;
  text-align: center;
  letter-spacing: 10vw;
  top: 50%;
  left: calc(50% + 5vw);
  transform: translateX(-50%);
  height: auto;
}
@media (max-width: 575px) {
  body:after {
    font-size: 12px;
  }
}