body { 
      font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; 
      margin: 0; 
      padding: 0; 
      background-color: #ffffff; 
      color: #1f2937; 
      line-height: 1.6;
    }
    h1, h2, h3, h4, p, ul, li { 
      margin-top: 0;
      margin-bottom: 1rem; 
    }
    img, iframe { 
      display: block; 
    }
    .max-w-7xl { 
      max-width: 80rem; 
      width: 100%; 
      padding: 0 1.5rem; 
      box-sizing: border-box;
    }