body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}
.container {
    background-color: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 500px;
}
h1 {
    text-align: center;
    color: #1c1e21;
}
textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #dddfe2;
    border-radius: 6px;
    margin-bottom: 1rem;
    font-size: 1rem;
    resize: vertical;
}
select, button {
    width: 100%;
    padding: 0.75rem;
    border-radius: 6px;
    border: 1px solid #dddfe2;
    font-size: 1rem;
    margin-bottom: 1rem;
}
button {
    background-color: #1877f2;
    color: #fff;
    border: none;
    cursor: pointer;
}
button:hover {
    background-color: #166fe5;
}
#output {
    margin-top: 1rem;
    padding: 1rem;
    background-color: #f0f2f5;
    border-radius: 6px;
    min-height: 50px;
}