body {
  background-image: lightgrey;
  
  }
  
  .container {
    display: flex;
    flex-wrap: wrap;
    width: 980px;
    margin: 0 auto;
    margin-top: 40px;
  }
  
  @media only screen and (min-width: 320px) and (max-width: 576px) {
    .container {
      width: 100%;
      padding-left: 23px;
      flex-direction: column-reverse;
    }
    .boxes {
      width: 100%;
    }
  }
  
  body {
    background: linear-gradient(230deg, #b5b5b5 0%, #ebebeb 20%, #f5f5f5 20%, #f5f5f5 40%, #909b9b 40%, #c2cdcd 60%, #bfb9b9 60%, #f1d7d7 80%, #ebeae6 80%);
    background-size: 100%;
    background-repeat: no-repeat;
  }
  body:before {
    content: '';
    position: fixed;
    top: 0;
    bottom: 0;
    width: 100%;
    z-index: -1;
    background: linear-gradient(to right bottom, rgba(255, 255, 255, 0.2), lightgrey 75%);
  }
  html {
    margin: 0;
    font-family: 'Muli', sans-serif;
    font-smooth: antialiased;
    text-rendering: optimizeLegibility;
  }
  body {
    margin: 0;
    font-size: 1.15rem;
    line-height: 1.4em;
  }
  #content_container {
    background-color: #fff;
    margin: 80px 10%;
    padding: 30px 60px;
    border-radius: 20px;
    box-shadow: 0 3px 26px 0 rgba(0, 0, 0, 0.20);
  }
  main, header {
    box-sizing: border-box;
  }
  main {
    background-color: #f7f7f7;
    padding: 20px;
    border-radius: 10px;
    color: #6b6b6b;
    margin: 40px 0;
  }