body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

header {
    background-color: #333;
    color: #fff;
    padding: 1em;
    text-align: center;
}

main {
    padding: 2em;
}

#avatar-editor, #marketplace {
    margin-bottom: 2em;
}

label {
    display: block;
    margin: 0.5em 0;
}

button {
    padding: 0.5em 1em;
    background-color: #007bff;
    color: #fff;
    border: none;
    cursor: pointer;
}

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