body {
  padding: 0;
  margin: 0;
  background-color: #000;
  overflow: hidden;
}
.example-text {
        color: #fff;
        font-size: 3.5em;
        text-align: center;
    }
@media only screen and (max-width: 600px) {
    body {
        font-size: 12px;
        padding: 0;
        margin: 0;
        overflow: hidden;
    }
}