body {
    font-family: Arial;
    background: #f5f5f5;
}
form {
    background: white;
    padding: 20px;
    width: 300px;
    margin: 50px auto;
}
input, button {
    width: 100%;
    padding: 10px;
    margin: 5px 0;
}
button {
    background: black;
    color: white;
    border: none;
}
body{
background:#f4f6f9;
font-family: 'Segoe UI';
}

.card{
border-radius:12px;
box-shadow:0 0 10px rgba(0,0,0,0.1);
padding:20px;
background:white;
}

.topbar{
background:#111827;
color:white;
padding:15px;
}

.btn-primary{
background:#4f46e5;
border:none;
}