Global Site Search look in Header

Hello!

I have been trying to get the Global Site Search bar that I was successful able to place in the header to look more like the standard search bar. Right now it all seems to be working but it looks out of place on the site by another icon.

I tried the resolution on this blog but it had no change.
https://premium.wpmudev.org/forums/topic/css-help-plugin-is-too-big-for-the-space-allotted?imob=b&utm_expid=3606929-106.UePdqd0XSL687behGg-9FA.1&utm_referrer=https%3A%2F%2Fpremium.wpmudev.org%2Fforums%2Ftags%2Fglobal-site-search%3Fimob%3Db