Search icon tilt on left instead of right

Add the following code to Divi Theme Options Custom CSS area.

.el_ajax_search_icon:after {
top: 30%;
-webkit-transform: rotate(270deg);
-moz-transform: rotate(270deg);
-o-transform: rotate(270deg);
-ms-transform: rotate(270deg);
transform: rotate(270deg);
}
 

You may need to adjust the top position from 30% to an upper or lower value in order to shift the icon up or down in the input field.

Default:

After: