body {
            font-family: Arial, sans-serif;
            max-width: 600px;
            margin: 0 auto;
            padding: 20px;
            line-height: 1.6;
        }
        h1 {
            text-align: center;
        }
        form {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 5px;
        }
        input[type="text"], input[type="submit"], input[type="range"], input[type="color"] {
            width: 100%;
            
            margin-bottom: 10px;
            box-sizing: border-box;
        }
        input[type="range"] {
            -webkit-appearance: none;
            appearance: none;
            height: 25px;
            background: #d3d3d3;
            outline: none;
            opacity: 0.7;
            transition: opacity .2s;
        }
        input[type="range"]:hover {
            opacity: 1;
        }
        input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 25px;
            height: 25px;
            background: #4CAF50;
            cursor: pointer;
            border-radius: 50%;
        }
        input[type="range"]::-moz-range-thumb {
            width: 25px;
            height: 25px;
            background: #4CAF50;
            cursor: pointer;
            border-radius: 50%;
        }
        #pattern_buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 20px;
        }
        #pattern_buttons button {
            flex: 1 0 calc(33.333% - 10px);
            padding: 10px;
            background-color: #4CAF50;
            color: white;
            border: none;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        #pattern_buttons button:hover {
            background-color: #45a049;
        }
        @media (max-width: 480px) {
            #pattern_buttons button {
                flex: 1 0 calc(50% - 10px);
            }
        }