Theory Looking at current implementation of the pinterest site (it might change in the future), when you open the overlay a noscroll class is applied to the body element and overflow: hidden is set, thus body is no longer scrollable. The overlay (created on-the-fly or already inside the page and made visible via display: block, … Read more
You can use filters with -webkit-filter and filter: Filters are relatively new to browsers but supported in over 90% of browsers according to the following CanIUse table: https://caniuse.com/#feat=css-filters You can change an image to grayscale, sepia and lot more (look at the example). So you can now change the color of a PNG file with … Read more
#container { width: 100px; height: 100px; position: relative; } #navi, #infoi { width: 100%; height: 100%; position: absolute; top: 0; left: 0; } #infoi { z-index: 10; } <div id=”container”> <div id=”navi”>a</div> <div id=”infoi”> <img src=”https://appharbor.com/assets/images/stackoverflow-logo.png” height=”20″ width=”32″ />b </div> </div> I would suggest learning about position: relative and child elements with position: absolute.