Improving the login page

[wuhanstudio]

Hi, I made several changes on the login page to make it more clear:

1. These two <div> have different width.
2. A little too much empty space on mobile devices.
3. Add some extra space between rows.
4. Justify the list which makes it more clear.

Before changes:

After changes:

After making changes, it looks much better on mobile devices using responsively.