How to delete the margin left configuration from the content of the tab?

Here is an image to illustrate what I am talking about.

I am aware about the custom class option on the plugin,but none of the codes that I use to try to move the content of the tab to the left with no space at all have worked.

What would be the exact code to be inserted in order to be effective? Is there a code that could be inserted at my theme css to take effect in every post I have ERT in use or will I need to add this code one by one

Hi there,

Thanks for the response. Unfortunately either I did something wrong or it didn’t work.

Here is what I did:

1) I inserted the code provided into my theme css stylesheet with the custom class name of tabcontent, as shown below:

.tabcontent ul.tab-content{
      padding: 0;
   }

2) Into the custom class option in the plugin, I inserted the css class tabcontent and the code became:
[restabs alignment="osc-tabs-left" pills="nav-pills" responsive="false" class="tabcontent" icon="false" text="V" tabcolor="#2E2E2E" tabheadcolor="#ffffff" seltabcolor="#2fa202" seltabheadcolor="#ffffff" tabhovercolor="#195402" contentcolor="#f9f9f9"]

This is the post where I inserted the code above. Please check what is wrong here to give me the proper directions.

I have just tried and unfortunately it didn’t solve the issue. I am contacting you through the contact form with my site admin details.