@import url('https://fonts.googleapis.com/css?family=Ubuntu:700&display=swap');

body {
  color: #ffffff;
  font-family: 'Ubuntu', sans-serif;
}

html { 
  background: url(background.jpg) no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}

.container {
  margin: 0 auto;
  padding-top: 15vh;
  width: 30vh;
}

h1 {
  font-size: 3em;
}

h2 {
  font-size: 4em;
}

h3 {
  font-size: 1.8em;
}

h1, h2, h3, h4 {
  text-align: center
}

ul {
  display: flex;
  justify-content: center;
  list-style: none;
}

img {
  height: 45px;
}