About some question for HTML and images

How do I get images in the HTML loading engine

Are you talking about the preloader?


I mean, how do I change the style of HTML buttons, and I think I can only decorate them with solid colors, and if I want to replace them with images that I want, what should I do

background:url(some url of and image);
<button id = "someid">name of button </button>

im pretty sure thats right if not plz tell me