@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300&display=swap');
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto', sans-serif;
    font-weight: 800;
}
body {
    background-color: #c9c3c3;
}

.main {
    max-width: 400px;
    margin: 50px auto;
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.container {
    text-align: center;
}

.head {
    color: #333;
}

.box {
    margin-top: 20px;
}

input {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    box-sizing: border-box;
}

input[type="submit"] {
    background-color: #4caf50;
    color: #fff;
    cursor: pointer;
    border: none;
}

/* Responsive design */
@media only screen and (min-width: 600px) {
    .main {
        margin-top: 80px;
    }
}