Adjust Post's Content, Align Social Media, URL in the Footer, Tagline and Logo

Old question:
1) I have attached the a picture explaining what I meant by paragraph. I think the more accurate word would be “line”? Anyhow, what I tried to ask is how to adjust the space/lengths in the areas that the red arrows point at (previously from https://hb-themes.com/forum/all/topic/adjustment-on-youtube-video-size-and-space-between-paragraphs/)

New questions
2) My website, http://www.korpungun.com, also has the same issue regarding slinging social media on mobile as same as #1 and #2 in this link https://hb-themes.com/forum/all/topic/aligning-social-media-slider-on-mobile/ – the social media is too far to the left not entered and the significant space between menu and slider on mobile device (Iphone). How could I have this fixed on my website?

3) On the Contact column at my website’s footer, the Tel, E-mail, and Address do not contain URL links, how could I add the URL to them?

4) Is there a way to adjust the length of space between the tagline and the site logo (please see the attached)?