box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    }
    h2 {
        text-align: center;
    }
    .form-group {
        margin-bottom: 20px;
    }
    label {
        display: block;
        font-weight: bold;
    }
    input[type="text"],
    input[type="email"],
    input[type="tel"],
    input[type="password"] {
        width: 100%;
        padding: 8px;
        border: 1px solid #ccc;
        border-radius: 4px;
        box-sizing: border-box;
    }
    .button-group {
        display: flex;
        justify