body{font-family:Arial;background:#f4f6f9;margin:0}
.wrapper{display:flex;min-height:100vh}
.sidebar{width:220px;background:#003366;color:#fff;padding:15px}
.sidebar a{color:#fff;display:block;margin:8px 0;text-decoration:none}
.main{flex:1;padding:20px}
.card{background:#fff;padding:15px;margin-bottom:15px;border-radius:6px}
input,button{padding:8px;width:100%;margin-bottom:8px}
button{background:#0066cc;color:#fff;border:none}