body{margin:0;background:#0b1c2d;color:white;font-family:sans-serif}
.hero{text-align:center;padding:100px}
.btn{padding:12px 25px;background:#1ea1ff;color:white;text-decoration:none}
.card{width:300px;margin:100px auto;background:#122b45;padding:20px;border-radius:10px}
input,button{width:100%;padding:10px;margin:5px 0}
.sidebar{position:fixed;width:200px;height:100%;background:#122b45;padding:20px}
.sidebar a{display:block;color:white;padding:10px;cursor:pointer}
.main{margin-left:220px;padding:20px}