Where do I go to remove this padding? Wordpress Site

[toddles_]

Hi,
I have no support from the dodgy developer of the theme I bought (they are no longer on Envato) but my client loves the theme.

I want to remove the huge gap between the grey line and the slider.

Could anyone help me find where to the following code in the editor? I can’t seem to make the connection.

[dtbaker]

Install https://wordpress.org/plugins/simple-custom-css/ and add your own css to change/remove this element.

The css could be something like:

.no-content{
padding:0;
float:none;
}

[toddles_]

Thank you so much. That worked perfectly.