How To Create A Divi Custom Navigation Menu With Fly-In Effect

Just an FYI.
I’m still not convinced about this design so I will try to update this from time to time once I have spare time.

Go the Divi > Theme Options > Custom CSS


@-webkit-keyframes scale-in-hor-right {
  0% {
    -webkit-transform: scaleX(0);
            transform: scaleX(0);
    -webkit-transform-origin: 100% 100%;
            transform-origin: 100% 100%;
    opacity: 1;
  }
  100% {
    -webkit-transform: scaleX(1);
            transform: scaleX(1);
    -webkit-transform-origin: 100% 100%;
            transform-origin: 100% 100%;
    opacity: 1;
  }
}
@keyframes scale-in-hor-right {
  0% {
    -webkit-transform: scaleX(0);
            transform: scaleX(0);
    -webkit-transform-origin: 100% 100%;
            transform-origin: 100% 100%;
    opacity: 1;
  }
  100% {
    -webkit-transform: scaleX(1);
            transform: scaleX(1);
    -webkit-transform-origin: 100% 100%;
            transform-origin: 100% 100%;
    opacity: 1;
  }
}



#top-menu li.et-show-dropdown ul {
   background:white;
   position:fixed;
    width: 40vw;
	height:100vh;
	right:0;
	top:0;
-webkit-animation: scale-in-hor-right 0.5s cubic-bezier(0.250, 0.460, 0.450, 0.940) both;
    animation: scale-in-hor-right 0.5s cubic-bezier(0.250, 0.460, 0.450, 0.940) both;
}