My website is behaving unresponsive

Hi,

My website link: https://howfreelance.com/blog/. In desktop version my website looks like this: https://easycaptures.com/fs/uploaded/757/5188440042.png

And when I reduce my window size making it similar like in mobiles, the logo and the banner besides it gets jumbled up. Please can you help me with it?

Thanks.
Abrar