html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
}

h1 {
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 800;
  font-size: 12vh;
  text-transform: uppercase;
}

.lines {
  overflow: hidden;
}
.chars {
  color: red;
}
.fullScreen {
  height: 100vh;
  display: flex;
  align-items: center;
  padding-left: 5vw;
  min-width: 400px;
  visibility: hidden; /* fouc */
}

.lines .chars {
  border: 1px solid black;
}