While we don’t currently have settings for styling the Mhmm menu on scroll, you can easily accomplish this with a bit of CSS. For example, to add a nice, subtle drop-shadow, just add the following to your stylesheet or to Divi > Theme Options > Custom CSS:
.mhmm-scrolled #mhmm {
box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.5);
}
Or to change the background color on scroll, you’d do something like this:
.mhmm-scrolled #mhmm #et_pb_section_sticky {
background-color: #F4002A;
}
/* Adds a slow fade from the original background color to the color you set on scroll */
#mhmm #et_pb_section_sticky {
-o-transition: 0.5s;
-ms-transition: 0.5s;
-moz-transition: 0.5s;
-webkit-transition: 0.5s;
transition: 0.5s;
}