body{font-family:Arial,sans-serif;height:100vh;margin:0;background-color:#fff}*{box-sizing:border-box}main{width:100%;max-width:900px;margin:auto;margin-top:3rem;padding-left:1rem;padding-right:1rem}.footer{padding:4rem 1rem}.footer-content{max-width:1200px;margin:auto;margin-bottom:1rem;text-align:center}