How do I add shapes to content areas and header images such as in the how Maids In Black works section?this As you can see in the content boxes there is a v shape in the middle. I have also seen this on other sites at the bottom of the banner.

I would really like to know how this is done. Can I do this myself with code? because I would rather do it myself than buy a theme.

I hope to hear from someone.

FYI also, the site is using a custom theme.

To discover this, use your browsers web inspection tools, review source code and CSS.