Full width code block on brine template

hi there! 

wondering if there's a code i can inject to make the code block full width on this page www.simplyrepair.uk/reviews

I have tried 

#reviews .Index-page-content {
  padding-left: 0px;
  padding-right: 0px;
  padding-top: 50px;
  padding-bottom: 0px;
}

but that's just the page padding itself as far as i understand and the code block appears to be limited to a certain width 

Thank you!

Add to Home > Design > Custom CSS

div#block-yui_3_17_2_1_1573724232914_6601 {
    width: 100% !important;
}

It will improve a bit

to set fullwidth code block, you need to set fullwidth for main content. If you want this, please let me know, I will give the code.

that worked! thank you so so much I really appreciate that!!!