Editing background transparency of drop down and mega menus

I’d suggest to use a rgba color. A hex/rgba converter can be found here: http://hex2rgba.devoth.com/

Insert following code into the quick css field and change the color value (and opacity value) if necessary.

.header_color .main_menu ul, .header_color .main_menu .menu ul li a, .header_color .pointer_arrow_wrap .pointer_arrow, .header_color .avia_mega_div {

background-color: rgba(255,255,255,0.6)

}