body {
    font-family: Arial, sans-serif;
}

.container {
    width: 90%;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 8px;
    background-color: #f9f9f9;
}

h1, h2, h3 {
    text-align: center;
}

form div {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 5px;
}

input[type="text"], input[type="email"], select {
    width: 100%;
    padding: 8px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

button[type="button"] {
    padding: 5px 10px;
    border: none;
    background-color: #007bff;
    color: white;
    border-radius: 4px;
    cursor: pointer;
}

button[type="submit"] {
    padding: 10px 20px;
    border: none;
    background-color: #28a745;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    display: block;
    width: 100%;
}

.hidden {
    display: none;
}

table {
    width: 100%;
    border-collapse: collapse;
}

table, th, td {
    border: 1px solid #ccc;
}

th, td {
    padding: 10px;
    text-align: center;
}

#errorMessages {
    background-color: #f8d7da;
    color: #721c24;
    padding: 10px;
    border: 1px solid #f5c6cb;
    border-radius: 4px;
    margin-bottom: 15px;
}