.container{max-width:800px;margin:0 auto;padding:2rem;background:#fff;box-shadow:0 2px 5px rgba(0,0,0,.1)}h1,h2,h3{margin-top:1.5em;margin-bottom:.5em;font-weight:600}h1{font-size:1.8rem}h2{font-size:1.4rem}ol,p,ul{margin-bottom:1em}ol,ul{padding-left:1.5em}.footer{text-align:center;padding:1rem;font-size:.8rem;color:#666}@media (max-width:600px){.container{padding:1rem}h1{font-size:1.5rem}}