A very lightweight Webkit and Web Browser for .Net [ Not Like CefSharp]

I'm developing an application and I want to use HTML5 and CSS for User Interface and I use WPF.

I started using CefSharp and other alternatives but the problem is their sizes.

My application is a lightweight and a free web service and it's too much size for a small app like this.

CefSharp only takes 60MB and DotNetBrowser even more ! :(

Everything I found uses chromium and it has same size... I found Gecko.Net from Mozilla and it has big size too.

Also I found a really lightweight and Modern browser wrapper for .net but it only works on last version of windows 10 , because it uses Microsoft Edge!

It's about one month I'm searching and searching but it's like I never find the thing I need.

No one downloads a light and small app for 100Mb and more, The Highest size I can have is around 5 - 10 Mb!

If you know anything that can help me , I really appreciate it !

All I need is a small web-browser that support HTML5 and CSS rendering !