body {
  margin: 0;
  height: 100vh;
  overflow: hidden;
}
body:before {
  content: 'JUAN LEJARZA';
  color: #fff;
  position: fixed;
  z-index: 10;
  top: 90%;
  left: 10%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
  font-family: 'arial', sans-serif;
  font-weight: 100;
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5em;
  mix-blend-mode: difference;
  width: 250px;
  text-align: center;
}