Widget video from youtube

Hi, I’ve read this link https://athemes.com/forums/topic/embedded-video-auto-resizing-cant-make-it-smaller/ but When I change the ccs style, nothing happens. What can I do in order to change the size of that video. This is my website http://www.elgrito.pe/

Hello, you should be able to achieve that be add custom css

.fluid-width-video-wrapper {
  width: 80%;
  position: relative;
  padding: 0;
  margin: auto;

Note there is changes for width and margin.

Here is the link for width: 70%