How can I make a summary block background display the device width?

Does anyone know how to make the background color of this summary block on this page extend the width of the device?

I figured it out on my own. I made the left and right margin of the summary block wrapper -300px and I made the left and right padding of it 300px.

#block-yui_3_17_2_1_1574400161847_5399 .summary-block-wrapper {background: #e4e4e4;
    margin-left: -300px;
  margin-right: -300px;
    margin-bottom: 0;
    padding-bottom: 3vw;
  padding-left: 300px;
  padding-right: 300px;
  margin-top: 0;}