Hello,
Regarding the Custom Icons under the Mobile bottom nav bar, you use an Image instead of Icons added through the Icon class so, the font-size property wouldn’t be applicable to the Image element. So, you would need to use the width & height property to adjust the size of the Custom Icon Images uploaded in it.
Please try using the below Custom CSS code and paste it to Dashboard >> Theme Settings >> Custom CSS >> Global CSS section:
.wd-toolbar.wd-toolbar-label-show .wd-toolbar-link .wd-custom-icon img {
width: 100% ;
height: auto ;
}
This CSS will make the Icon appear correctly under the Nav Bar.
Hope this helps !
Best Regards