header,footer {
        background: black;
        position: fixed;
        top: 0;
        width: 100%;
        height: 80px;
      }

      h3{
        display: inline-block;
        color: white;
        width: 96%;
        padding: 5px;
      }

      span {
        cursor: pointer;
      }
      footer {
        text-align: center;
        padding: 20px;
      }
      footer a {
        color: white;
      }