* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    #page{
      
      max-width: 1000px;
      margin: auto;
      background-color: #000;
      color: #fff;
      padding-bottom: 20px;
    }
    body {
      font-family: Arial, sans-serif;
      line-height: 1.6;
    }
    header {
      background-color: #000;
      color: #fff;
      padding: 1rem 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      flex-direction: row;
    }

    
    .header-left {
      display: flex;
      align-items: center;
    }
    .header-left img {
      height: 90px;
      margin-right: 1rem;
    }
    .welcome-heading {
      display: none;
      font-size: 1.5rem;
      color: gold;
    }

    .expert-heading{
      color: skyblue;
      font-size: 1.5rem;
    }
    nav {
      display: flex;
      align-items: center;
    }
    .menu-toggle {
      display: none;
      flex-direction: column;
      cursor: pointer;
    }
    .menu-toggle div {
      width: 25px;
      height: 3px;
      background-color: #fff;
      margin: 4px 0;
    }