Help, about slicing_html/css_WEB-ITnose

I used to mostly write code. Now the job of css div also falls on me. In the past, when I wrote styles, I used PS to rigidly extract the materials I needed. Now it may be necessary to "slice" it more professionally. How to slice? What's the point? Friends who have information, please recommend

Reply to the discussion (solution)

It is the same as the cutout you used, except that the cutout allows you to divide the entire rendering into Put it on the web page piece by piece. It's very simple, you can shrink the ps cut image on Baidu and you will know.

Slicing... I don’t know how to explain my understanding. In fact, it is just some gradient background or something. You need to make a small picture to repeat. The renderings on some banners, pictures of advertising spaces, and pictures of product beautification should be cut according to the size of your page.