.responsive-video iframe{position:absolute;top:0;left:0;width:100%;height:100%}.responsive-video{position:relative;padding-bottom:56.25%;padding-top:0px;height:0;overflow:hidden}:root{--dropdown-menu-width:300px}.nav li ul{width:var(--dropdown-menu-width)}.nav li li ul{left:var(--dropdown-menu-width)}#top-menu li li a{width:calc(var(--dropdown-menu-width) - 40px)}