body {
    font-family: Arial, sans-serif;
    background: url("your-background.gif") no-repeat center center fixed;
    background-size: cover;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    }

    .app {
    background: rgba(115, 28, 246, 0.4);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    width: 650px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    }

    .color-bar {
    height: 80px;
    border-radius: 10px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: monospace;
    font-weight: bold;
    font-size: 1.2rem;
    color: white;
    text-shadow: 0 1px 3px rgba(0,0,0,0.5);
    }

    .panels {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    }

    .panel {
    flex: 1;
    background:  rgba(255, 255, 255, 0.35);
    padding: 1rem;
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    }

    h2 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
    }

    .slider-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    }

    .slider-row label {
    width: 20px;
    }

    .slider-row input[type="range"] {
    flex: 1;
    }

    .slider-row span {
    width: 40px;
    text-align: right;
    font-family: monospace;
    }

    .input-row {
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    }

    input[type="text"] {
    flex: 1;
    padding: 0.4rem;
    border: 1px solid #aaa;
    border-radius: 5px;
    }

    p {
    margin-top: 0.5rem;
    font-weight: bold;
    }
    body {
    font-family: Arial, sans-serif;
    background: url("color.gif") no-repeat center center fixed;
    
    background-size: cover;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    }
    button {
    margin: 0.3rem 0.2rem 0 0; 
    padding: 0.4rem 0.8rem;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    }

    button:hover {
    background: #0056b3;
    }