body {
      margin: 2rem;
      background: #fff;
      color: #000;
      }

      .logo {
      width: 100%;
      max-width: 1000px;
      display: block;
      margin: 0 auto;
      }

      .main{
      max-width:900px;
      margin: 0 auto;
      }

      footer {
      max-width:900px;
      margin: 0 auto;
      text-align: center;         
      }