demo.css

      body {
        margin: 0;
        padding: 0;
        font-size: 100%; /*cca 16px*/
      }

      .wrapper {
        background:
          -webkit-linear-gradient(64deg, hsla(184.53, 92.7%, 44.86%, 1) 0%, hsla(184.53, 92.7%, 44.86%, 0) 65%),
          -webkit-linear-gradient(135deg, hsla(182.26, 79.3%, 55.6%, 1) 15%, hsla(182.26, 79.3%, 55.6%, 0) 80%),
          -webkit-linear-gradient(344deg, hsla(225.28, 68.76%, 52.52%, 1) 23%, hsla(225.28, 68.76%, 52.52%, 0) 75%);
        background:
          linear-gradient(26deg, hsla(184.53, 92.7%, 44.86%, 1) 0%, hsla(184.53, 92.7%, 44.86%, 0) 65%),
          linear-gradient(315deg, hsla(182.26, 79.3%, 55.6%, 1) 15%, hsla(182.26, 79.3%, 55.6%, 0) 80%),
          linear-gradient(106deg, hsla(225.28, 68.76%, 52.52%, 1) 23%, hsla(225.28, 68.76%, 52.52%, 0) 75%);

        height: 951px;
        width: 100%;
        text-align: center;
        }


    .title {
      padding: 20px;
      color: #fff;
      font-size: 50px;
      font-family: 'Oswald', sans-serif;
      text-align: center;
      letter-spacing: 1px;
      margin-bottom: 100px;
    }