body {
            
			margin: 0;
        }

        article, footer {
            font-size: 18px;
            line-height: 1.6;
            color: #333;
      /*       max-width: 800px;
            padding: 10px; */
            margin: auto;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
        }

        a {
            color: #666;
            text-decoration: none;
            transition: color 0.5s;
        }

        a:hover {
            color: #444;
        }

        ken-burns-carousel {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 70%;
            background: #fff;
        }

        ken-burns-carousel#demo5 {
            --img-filter: grayscale(100%);
        }

        h2 {
            margin-top: 64px;
            font-size: 1.3em;
        }

        .rv_kb_0 {
            position: relative;
            height: 50vh;
            /* padding-bottom: 66.6%; 
			padding-bottom: 15%;*/
			margin-bottom:-13vh
        }

        pre code {
            padding: 10px 15px !important;
        }

        ken-burns-carousel, pre {
            box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
        }