<style type="text/css">
        .frame-area {
            display: block;
            width: 100%;
            max-width: 800px;
            height: 300px;
            overflow: auto;
            border: #999999 1px solid;
            margin: 0px;
            padding: 0px;
        }
        
        #video-laptop {
            position: relative;
            padding-top: 25px;
            padding-bottom: 67.5%;
            height: 0;
        }
        #video-laptop iframe {
            box-sizing: border-box;
            background: url(./laptop.png) center center no-repeat;
            background-size: contain;
            padding: 11.9% 15.5% 14.8%;
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
        }
    </style>