CSS adjusts the size of the picture, you know width, height

Today's study is to teach you how to use CSS to adjust the size of the picture, in the previous lesson example, we touched the width and height of the two properties, the two properties are used to set the width and height of the element.
In CSS, for the size of the picture, we also use width and height to define. Grammar:

Description: In the CSS beginner stage, all are using pixels as units, in the CSS advanced stage we will be in-depth explanation of other CSS units examples:

<! DOCTYPE html> 
The preview effect in the browser is as follows:
 
 
Analysis: Regardless of the actual size of the picture, you can use width and height to define the height and width you want. Don't be silly. Also use PS to do height and width to dare to use that picture on the page.