.SubmitButton {
    padding: 8px;
    border-radius: 2px;
    cursor: pointer;
    transition: background-color 0.3s, box-shadow 0.3s, color 0.3s;
    background-color: #343a40;
    color: #f8f9fa;
    border-color: #1d2124;
}

.SubmitButton:hover {
    background-color: #23272b;
}

main {
    padding: 0;
    display: flex;
    align-items: center;
}

h1, p {
    color: black;
    margin: 0;
    width: 100%;
}

.HeaderContainer {
    width: 100%;
}

#test_group {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 650px;
    gap: 15px;
    padding: 40px;
    margin: 50px;
    background-color: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    border: 1px solid lightgray;
    border-radius: 5px;
}

.InputFields {
    display: flex;
    gap: 10px;
}

#id_mail, #id_name, #id_user_name, #id_heft {
    width: 100%;
    padding: 10px 12px;
    font-family: Arial, sans-serif;
    border: 1px solid #ccc;
    border-radius: 4px;
    outline: none;
    box-sizing: border-box;
}

.ErrorMessage {
    text-align: center;
    color: #a94442;
    font-size: 0.8em;
    margin-top: 6px;
}