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). 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 you're unable to read the code in the chat 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;