body{font-family:Arial;background:#f4f4f4;margin:0}
.sidebar{width:230px;background:#c40000;color:white;height:100vh;position:fixed}
.sidebar a{display:block;color:white;padding:14px;text-decoration:none}
.sidebar a:hover{background:#900}
.content{margin-left:230px;padding:20px}
.card{background:white;padding:20px;margin-bottom:20px;border-radius:6px}
table{width:100%;border-collapse:collapse}
td,th{padding:8px;border-bottom:1px solid #ddd}