body {
   font-family: Arial, sans-serif;
   margin: 0;
   padding: 0;
   background-color: #f7f7f7;
}

.container {
   width: 80%;
   max-width: 800px;
   margin: 0 auto;
   padding: 20px;
   background: #fff;
   border-radius: 8px;
   box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

header {
   text-align: center;
   margin-bottom: 20px;
}

header h1 {
   font-size: 2em;
   margin: 0;
}

main {
   font-size: 1.2em;
}

ul {
   list-style-type: none;
   padding: 0;
}

ul li {
   margin: 10px 0;
}

a {
   color: #3490dc;
   text-decoration: none;
}

a:hover {
   text-decoration: underline;
}

footer {
   text-align: center;
   margin-top: 20px;
}