box shadow quặng boxit The box-shadow property enables you to cast a drop shadow from the frame of almost any element. If a border-radius is specified on the element with a box shadow, the box shadow takes on the same rounded corners
sandboxel Sandboxels Introduction. Sandboxels is a free falling-sand simulator that can be played in your browser. It features heat simulation, electricity, density, chemical reactions, cooking, and fire spread
flexbox Learn how to use the Flexbox model to create flexible and responsive layouts without float or positioning. The web page explains the basics of flex containers and flex items, and provides examples and browser support information
