Fullwidth embed YouTube video section with Left menu

If you have left menu and the first YouTube video section is cut and zoomed, for example,

you can try to solve this problem by means of custom css.

.video-container.video-ready iframe{
    height: 100% !important;
    width: 100% !important;
    margin-left: 0 !important;
    margin-top: 0 !important;
}
The result is this one.