How to style <code> tag

Hi, I need some help to style tag

Here is my jsfiddle link (

Padding not work at right side
How to adjust tab space
Design for Mobile divice (screen width 280px)
Anyone help me please!

Is it padding you need to change, or margin. You’re not going to see much change on padding unless you have enough text.

for tab space

Sorry I don’t understand with your MDN web docs for tab size.
Would you give me a example!