body {
            background: #eee;
            padding: 0;
            margin: 0;
        }

        #wrapper {
            padding: 5%;
            margin: 0 auto;
        }

        /* CSS Simple Pre Code */
        pre {
            background: #333;
            white-space: pre;
            word-wrap: break-word;
            overflow: auto;
        }

        pre.code {
            margin: 20px 25px;
            border-radius: 4px;
            border: 1px solid #292929;
            position: relative;
        }

        pre.code label {
            font-family: sans-serif;
            font-weight: bold;
            font-size: 13px;
            color: #ddd;
            position: absolute;
            left: 1px;
            top: 15px;
            text-align: center;
            width: 60px;
            -webkit-user-select: none;
            -moz-user-select: none;
            -ms-user-select: none;
            pointer-events: none;
        }

        pre.code code {
            font-family: "Inconsolata", "Monaco", "Consolas", "Andale Mono", "Bitstream Vera Sans Mono", "Courier New", Courier, monospace;
            display: block;
            margin: 0 0 0 60px;
            padding: 15px 16px 14px;
            border-left: 1px solid #555;
            overflow-x: auto;
            font-size: 13px;
            line-height: 19px;
            color: #ddd;
        }

        pre::after {
            content: "double click to selection";
            padding: 0;
            width: auto;
            height: auto;
            position: absolute;
            right: 18px;
            top: 14px;
            font-size: 12px;
            color: #ddd;
            line-height: 20px;
            overflow: hidden;
            -webkit-backface-visibility: hidden;
            transition: all 0.3s ease;
        }

        pre:hover::after {
            opacity: 0;
            visibility: visible;
        }

        pre.code-css code {
            color: #91a7ff;
        }

        pre.code-html code {
            color: #aed581;
        }

        pre.code-javascript code {
            color: #ffa726;
        }

        pre.code-jquery code {
            color: #4dd0e1;
        }