body {
    font-family: Arial, sans-serif;
    text-align: center;
    background: linear-gradient(to right, #141e30, #243b55);
    padding: 20px;
}

h1 {
    margin-bottom: 15px;
}

.controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    margin-top: 15px;
    width: 100%;
}

label {
    font-weight: bold;
    margin-top: 10px;
    display: block;
}

input, select, button {
    width: 80%;
    max-width: 300px;
    padding: 10px;
    font-size: 16px;
    display: block;
}

canvas {
    margin-top: 15px;
    border: 1px solid black;
    max-width: 100%;
    display: block;
}