How to make the block width fit the table width?

Question

JavaScript

How to make the width of the entire block be relative to the table?
Example

Answer 1

5 minutes in Google
https://habr.com/en/post/321250/

Answer 2

Without js, with label tag
input#test
label ~ for="test"
css: input { display: none; }
And style the label

Answer 3

width: inherit
try