html {
    box-sizing: border-box;
    background: #ffc600;
    font-family: 'helvetica neue';
    font-size: 20px;
    font-weight: 200;
  }
  
  body {
    margin: 0;
  }
  
  *, *:before, *:after {
    box-sizing: inherit;
  }

  h1 {
    margin-top: 0;
  }

  .site-wrap {
    max-width: 700px;
    margin: 100px auto;
    background: white;
    padding: 40px;
    text-align: justify;
  }

  .align-left {
    float: left;
    margin-right: 20px;
  }

  .align-right {
    float: right;
    margin-left: 20px;
  }

  .slide-in {
    opacity: 0;
    transition: all .5s;
  }

  .align-left.slide-in {
    transform: translateX(-30%) scale(0.95);
  }
  
  .align-right.slide-in {
    transform: translateX(30%) scale(0.95);
  }

  .slide-in.active {
    opacity: 1;
    transform: translateX(0%) scale(1);
  }