body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
}

header {
    width: 100%;
    max-width: 600px;
    padding: 1rem 0;
    text-align: right;
    border-bottom: 1px solid #ddd;
}

header a {
    color: #007bff;
    text-decoration: none;
    font-weight: bold;
    margin-right: 20px;
}

main {
    background: #fff;
    padding: 20px;
    margin: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 600px;
    box-sizing: border-box;
}

h1 {
    color: #333;
    text-align: center;
}

p {
    text-align: justify;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

.checkbox-group label {
    font-weight: normal;
    display: flex;
    align-items: center;
    margin-bottom: 5px;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin-right: 10px;
}

button {
    width: 100%;
    padding: 10px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: #0056b3;
}