html {
  box-sizing: border-box;
  font-family: sans-serif;
}
*, *::before, *::after {
  box-sizing: inherit;
}

body {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  margin: 0;
}

.left, .right {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 50%;
}

.right {
  right: 0;
}
.left {
  left: 0;
  text-align: right;
}

.left h1 {
  position: absolute;
  padding-right: 1em;
  height: 1em;
  line-height: 1em;
  font-size: 4rem;
  margin: 0;
  width: 100%;

  font-family: IBM Plex Serif;
}

.left h1:first-of-type {
  top: calc( 50% - 1em );
  font-weight: 800;
}
.left h1:last-of-type {
  bottom: calc( 50% - 1em );
  font-weight: 400;
}