body {
    font-family: Arial, sans-serif;
    background: #f2f4f7;
    margin: 0;
    padding: 30px;
}

.container {
    max-width: 650px;
    margin: auto;
    background: white;
    padding: 30px;
    border-radius: 10px;
}

h1 {
    text-align: center;
}

h2 {
    text-align: center;
}

label {
    display: block;
    margin-top: 18px;
    font-weight: bold;
}

input,
select {
    width: 100%;
    padding: 12px;
    margin-top: 6px;
    box-sizing: border-box;
}

button {
    width: 100%;
    padding: 14px;
    margin-top: 25px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
}

.success {
    margin-top: 20px;
    padding: 20px;
}

.error {
    margin-top: 20px;
    padding: 20px;
}

@media (max-width: 600px) {

    body {
        padding: 10px;
    }

    .container {
        padding: 20px;
    }

}