/* Reset and box-sizing */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    html, body {
      height: 100%;
      text-align: left;
    }

    /* Full-page background image */
    body {
      background: url('https://aseeum.com/copy/portfolio/images/risingmoon.png') no-repeat center center fixed;
      background-size: cover;
      font-family: Arial, sans-serif;
    }

    /* Header and menu styling */
    header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 40px;
      background: rgba(0, 0, 0, 0.5);
    }

    .logo {
      font-size: 1.5em;
      color: #fff;
      text-decoration: none;
    }

    .logo a {
      font-size: 1.5em;
      color: #fff;
      text-decoration: none;
    }

    nav a {
      color: #ffffff;
      text-decoration: none;
      margin-left: 20px;
      font-size: 1em;
      transition: color 0.3s ease;
    }

    nav a:hover {
      color: #a9a9a9;
      text-decoration: none;
    }

    /* Main content justify left with flexbox */
    main {
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      height: calc(100% - 80px); /* subtract header height */
      color: #fff;
      text-shadow: 0 1px 3px rgba(0, 0, 0, 0.7);
      text-align: center;
    }
    
    .list {
      font-size: 20px;
      width: 100%;
      margin: 0;
    }

    ul {
      display: flex;
      flex-direction: column;
      flex-wrap: wrap;
      width: 100%;
      margin-left: 45px;
    }  

    a {
      color:#ffffff;
      text-decoration: none;
    }

    a:hover {
      color: #a9a9a9;
      text-decoration: none;
    }