.register-card {
    margin-top: 3rem;
    padding: 20px;
    text-align: center;
    width: 100%;
}

.register-card h1 {
    margin-top: 0;
    font-size: 3.75rem;
    color: var(--color-title-blue);
    line-height: 1.2;
    margin-bottom: 4rem;
}

.register-card form {
    width: 30%;
    margin: 0 auto;
}

.register-card label {
    display: block;
    margin-bottom: 5px;
    font-size: 1.25rem;
    color: var(--color-gray);
}

.input-group {
    margin-bottom: 15px;
}

.register-footer {
    margin-top: 20px;
    margin-bottom: 5rem;
    font-size: 1.25rem;
    color: #6b7280;
}

.register-footer a {
    color: var(--color-dark-blue);
    text-decoration: none;
}

.error-message {
    color: red;
    margin-bottom: 10px;
}

#firstname {
    width: 100%;
    height: 34px;
    padding: 6px 12px;
    font-size: 14px;
    line-height: 1.42857143;
    color: var(--color-gray);
    background-color: var(--color-full-white);
    border: 1px solid var(--color-gray);
    background-image: none;
    border-radius: 4px;
}

#lastname {
    width: 100%;
    height: 34px;
    padding: 6px 12px;
    font-size: 14px;
    line-height: 1.42857143;
    color: var(--color-gray);
    background-color: var(--color-full-white);
    border: 1px solid var(--color-gray);
    background-image: none;
    border-radius: 4px;
}

#birth {
    width: 100%;
    height: 34px;
    padding: 6px 12px;
    font-size: 14px;
    line-height: 1.42857143;
    color: var(--color-gray);
    background-color: var(--color-full-white);
    background-image: none;
    border: 1px solid var(--color-gray);
    border-radius: 4px;
}

#email {
    width: 100%;
    height: 34px;
    padding: 6px 12px;
    font-size: 14px;
    line-height: 1.42857143;
    color: var(--color-gray);
    background-color: var(--color-full-white);
    background-image: none;
    border: 1px solid var(--color-gray);
    border-radius: 4px;
}

#password {
    width: 100%;
    height: 34px;
    padding: 6px 12px;
    font-size: 14px;
    line-height: 1.42857143;
    color: var(--color-gray);
    background-color: var(--color-full-white);
    background-image: none;
    border: 1px solid var(--color-gray);
    border-radius: 4px;
}

#password-confirm {
    width: 100%;
    height: 34px;
    padding: 6px 12px;
    font-size: 14px;
    line-height: 1.42857143;
    color: var(--color-gray);
    background-color: var(--color-full-white);
    background-image: none;
    border: 1px solid var(--color-gray);
    border-radius: 4px;
}