Every page needs to have an h1 that summarizes the main idea of the page.

Separate sections of content on the page with headings in sequential order. H2 comes after h1.

People don't visit most websites for leisure reading. They come to get information. Successful websites make that as easy as possible.

When users read the headings (h1-h6) on your page, they should get the main idea of the page even if they don't read anything else.
Don't skip a heading for the look. Headings need to be sequential. Begin with h1, then h2, then h3, etc.
If you have a group of related things to communicate, use a list. Lists are easier to read than paragraphs.
Keep paragraphs short and to-the-point. Provide links to relevant content when necessary.
At a minimum, each page should end with a link to the next thing you want your users to do. This is called a Call-to-Action, or a CTA, for short.
Links should be attached to anchor text that describes what the user will find if they visit the link. Avoid using generalizations like "click here" or "link" in favor of words that accurately describe the link.

End every page with a call-to-action. A CTA is a sentence that tells the user what to do next and provides a link to the next page.

to make a single column layout, I need a row that contains one div that spans all twelve columns of the grid.

to make a two column layout, I need a row that contains two divs that spans columns of the grid that add up to twelve.

to make a two column layout, I need a row that contains two divs that span all alcolumns of the grid that add up to twelve.

to make a three column layout, I need a row that contains three divs that spans columns of the grid that add up to twelve.

to make a three column layout, I need a row that contains two divs that span all alcolumns of the grid that add up to twelve.

to make a three column layout, I need a row that contains three divs that spans columns of the grid that add up to twelve.