body{font-family:Arial;background:#f4f6f9;margin:20px}
nav a{margin:10px;text-decoration:none}
table{width:100%;background:white}
td,th{padding:10px;border:1px solid #ddd}
.login{max-width:300px;margin:auto;margin-top:100px}
input,button{padding:8px;margin:5px;width:100%}