Hi webnokor,
Thanks for reaching to us.
1. Increasing nav image
Add below Custom CSS code to Theme Settings > Custom CSS > Global custom CSS
.wd-nav-vertical.wd-nav-sticky > li > a .wd-nav-img {
width: 30px !important;
height: 30px;
}
2. Changing menu items’s font-size
Go to Theme Settings > Typography > Advanced. In this area, you can assign elements like screenshot https://prnt.sc/UqPRFfgbcFxJ
.wd-nav.wd-nav-vertical>li>a
Please refer to our documentation https://xtemos.com/docs-topic/advanced-typography-settings/
Regards,