body{font-family:Arial;background:#f4f4f4;margin:0}.container{max-width:800px;margin:auto;padding:20px}.card{background:#fff;padding:15px;border-radius:10px;margin-bottom:15px}input{padding:10px;width:70%;margin-right:10px}button{padding:10px 15px;cursor:pointer}ul{padding-left:20px}