body {
    font-family: Arial, sans-serif;
    background-color: #0d1117;
    color: #f5f5f5;
    margin: 0;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}
h1 {
    color: #f0f6fc;
}
input[type="text"], button, textarea {
    width: 100%;
    max-width: 400px;
    background-color: #0d1117;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #30363d;
    border-radius: 5px;
    font-size: 16px;
    color: #c9d1d9;
}
button {
    background-color: #5cb85c;
    color: white;
    border: none;
    cursor: pointer;
}
button:hover {
    background-color: #4cae4c;
}
textarea {
    resize: none;
    height: 137px;
    font-family: monospace;
    background-color: #0d1117;
    border: 1px solid #30363d;
    color: #c9d1d9;
}