body {
    background-color: #000;
    color: #fff;
}
.intro {
    height: 100vh;
    background: linear-gradient(#f9fff8, #d8f2d5, #f0ffee);
}

.icon-block {
  padding: 0 15px;
}
.icon-block .material-icons {
	font-size: inherit;
}

pre{
      padding: 16px 20px 0px;
    background: #eee;s
    border: 1px solid #ddd;
    border-radius: 4px;
}

.info{
  font-size: 1.3rem;
  text-align: center;
}