body { font-family: Arial; margin:0; background:#f1f1f1; }
.login-bg { display:flex; justify-content:center; align-items:center; height:100vh; }
.login-box { background:white; padding:30px; border-radius:10px; width:300px; box-shadow:0 0 10px rgba(0,0,0,.1); }
.sidebar { width:200px; background:#003366; height:100vh; position:fixed; top:0; left:0; padding-top:20px; }
.sidebar a { display:block; padding:10px 20px; color:white; text-decoration:none; }
.sidebar a:hover { background:#004c99; }
table { border-collapse: collapse; width: 80%; margin-left:220px; background:white; }
th, td { padding:10px; border:1px solid #ccc; }