body {
    margin: 0;
    padding: 0;
}

.sit-container {
    width: 100%;
    max-width: 100%;
    padding: 20px;
    background: #f2f2f2;
    text-align: center;
}

.sit-header {
    background: #66e0ff;
    color: #222;
    padding: 15px;
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 20px;
}

.sit-upload input {
    padding: 10px;
    margin-bottom: 15px;
}

canvas {
    max-width: 100%;
    height: auto;
    margin: 20px 0;
    border: 1px solid #ccc;
}

.sit-controls {
    margin: 15px 0;
}

.sit-controls input {
    width: 80%;
}

.sit-buttons button {
    background: #66e0ff;
    border: none;
    padding: 10px 20px;
    margin: 10px;
    color: #000;
    cursor: pointer;
    font-size: 16px;
}

.sit-buttons button:hover {
    opacity: 0.8;
}