FlexSlider not working

Hello there,

I had an issue with the border of iframe which i resolved by putting the following code in the css in the custom css :

iframe {
border: none!;
important
}

However, when i undo the code within the custom css. The page displays with the following errors:

1. twitter feeds from showing up in an iframe on right sidebar
2. the slider carousel isnt working.

Is there way to revert these changes so that iframe appears, as well as the slider carousel?

I’d appreciate any suggestions.

This is the site: https://blog.ink-global.com/

Many thanks.