style.css

html, body {
    margin: 0;
    padding: 0;
    font-family: monospace;
    font-size: 15px;
    text-align: center;
    color: #444;
  }
  
  .title {
    font-size: 128px;
    margin-top: 100px;
    margin-bottom: 100px;
  }
  
  .about-text {
    width: 75%;
    margin-bottom: 100px;
  }
  
  .controller {
    display: flex;
    justify-content: space-around;
  }
  
  .controller-layout {
    width: 75%;
    margin: 0 auto;
    margin-bottom: 30px;
  }
  
  #speedslider {
    width: 70px;
  }
  
  a {
    color: hotpink;
  }
  
  .btn {
    cursor: pointer;
  }
  
  .space {
    white-space: pre;
  }
  
  @-webkit-keyframes fadeIn {
    to {
      opacity: 1;
    }
  }
  
  @keyframes fadeIn {
    to {
      opacity: 1;
    }
  }
  
  .fade-in {
      -webkit-animation: fadeIn 3s ease-in 1 forwards;
    animation: fadeIn 3s ease-in 1 forwards;
    opacity: 0;
  }