body { background-color: #666; } .content { width: 800px; margin: 0 auto; } .links { display: flex; flex-direction: column; } .links a { color: #00FF00; text-decoration: none; } .links a:hover { color: #000; } .img { display: flex; justify-content: center; align-items: center; } .img img { width: 100%; }