* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
:root {
  font-size: calc(0.5vw + 1vh + 0.5vmin);
}
body {
  font: 100 50%/1.5 'Roboto', sans-serif;
}
html {
     min-height: 100%;
   background-size: cover;
   background-repeat: no-repeat;
   background-position: center center;
}
.intro {
  position: absolute;
  margin: 2em;
  padding: 0.2em 0.6em;
  cursor: pointer;
  color: #000;
  font-size: 2em;
  max-width: 26em;
  background-color: #fff;
  bottom: 0px;
  opacity: 0.6;
}
.intro h1 {
  margin-bottom: 0.5em;
  line-height: 1;
  font-weight: 100;
}