You can add some code to hide a Membership Portal page. This code should be added to the Brand being used for the portal, as Custom Bootstrap CSS (under the Brand's Customize Style tab).
In the Brand editor, under the Customize Style tab, there's a section where you can upload a CSS file containing the code below. [The file you upload needs to be a .css extension type of file, created in Notepad or similar editor. You can save it as a .css extension file. (Do not use a Microsoft Word document or similar that may add extra invisible code for formatting). ]
We recommend having a unique brand just for this purpose so that it doesn't interfere with how other sites, apps and portals are displayed.
The code is provided in this article for your convenience, however our Support team can't give additional web development help. If this information is in a help chat window, and you're unable to read the code in the window, please refer to the original article in the help center.
.nav > li > a[href*="NameofPage"]{
display:none!important;
}
.brand-header{
margin-left: -0px!important;
margin-right: -0px!important;