Sometimes you may want to load a CSS stylesheet dynamically after your HTML page has loaded and certain conditions are met (for example, if an element with a specific class exists in the DOM). jQuery can help you accomplish that with a few lines of code, helping you save some bandwidth and make your page load faster.
CSS
How to center divs within a page with CSS
Sometimes you may want to center a div element within a page, whether vertically, horizontally, or both (dead center). Here’s how you can accomplish all of that using CSS.