     border-radius: 5px;
            opacity: 0.8;
            box-shadow: rgba(0, 0, 0, 0.3) 0 1px 3px;
        }

    </style>
    <div class="bg">
        <div class="bg-inner">
            <div class="bg-inner-inner">
                <div class="line-down"></div>
                <div class="line-right"></div>
            </div>
        </div>
    </div>    
</body>
</html>