:root {
        --margin: 10px;
      }
      html, body {
        margin: 0;
        padding: 0;
      }

      body {
        min-height: 100vh;
        width: 100%;
        background-color: white;
        font-family: Helvetica, sans-serif;
      }

      .wrapper {
        margin: var(--margin);
      }

      ul {
        list-style-type: none;
      }

      h1 {
        color: white;
      }
      
      #contents {
        display: grid;
        grid-template-columns: repeat(1, minmax(0, 1fr));
        grid-gap: var(--margin);
        align-items: start;
        justify-items: start;
        padding: 0;
      }

      img {
        width: 100%;
        height: auto;
      }

      .block {
        padding: var(--margin);
        background-color: white;
      }