body{
    margin:0;
    padding:0;
    background:#f5f7fa;
    font-family:Segoe UI, Arial, sans-serif;
}

.navbar{
    background:#0d6efd;
    color:#fff;
    padding:15px;
    font-size:24px;
    font-weight:bold;
}

.container{
    width:90%;
    margin:40px auto;
}

.card{
    background:#fff;
    border-radius:10px;
    padding:30px;
    box-shadow:0 0 15px rgba(0,0,0,.1);
}

.btn{
    background:#0d6efd;
    color:#fff;
    padding:10px 20px;
    text-decoration:none;
    border-radius:5px;
    display:inline-block;
}

.btn:hover{
    background:#084298;
}