Blog post style issues on mobile

[Kotpes]

Mobile styles issues

1. Previous post link should be moved probably to after the post content

2. Post content could be wider

atm, it has a className="page grid--5col" which ends up being:

grid-column: 2 / span 5;

changing it to

grid-column: 1 / span 6;

will make sure it takes up all available space

3. Title could use some margin at the top

also, for .header--pageTitle changing

grid-column: 2 / span 4;

to

grid-column: 1 / span 6;

will make sure it takes all available space