main.css

body {
  margin: 0;
  background-image: url(background-image.jpg);
  background-size: cover;
  background-position: center;
}

p {
    display: block;
    -webkit-margin-before: 0em;
    -webkit-margin-after: 0em;
    -webkit-margin-start: 0px;
    -webkit-margin-end: 0px;
}

a {
  color: white;
}

.viewport {
  display: flex;
  width: 100vw;
  height: 100vh;
  justify-content: center;
  align-items: center;
}

.text-box {
  height: auto;
  width: auto;
  margin: 1vh;
  background-color: white;
  border-radius: 1vh;
  justify-content: center;
  align-items: center;
  border: 0.25vh solid #808080;
}

.title {
  font-size: 6vh;
  text-align: center;
  font-family: 'Roboto', sans-serif;
  padding: 1vh;
}

.subtitle {
  font-size: 4vh;
  text-align: center;
  font-family: 'Roboto', sans-serif;
  padding: 0 1vh 1vh 1vh;
}

.footer {
  font-size: 1vh;
  text-align: center;
  font-family: 'Roboto', sans-serif;
  padding: 0 1vh 1vh 1vh;
  color: white;
  position: absolute;
  bottom: 0;
}