A menu included in multiple pages with an iframe has the following rule: .header_area.navbar_fixed .main_menu {transform: translateY(70px);} . It works perfectly when the menu is put direcly on the page (not through iframe). But when loaded through an iframe, the transform: translate rule of the menu doesn’t work. Here is the demo: http://project-smac.orgfree.com . And this is how the menu behaves when menu is directly on the page (not through iframe): http://project-smac.orgfree.com/en/projects-for-future-humanity.html . Can anybody help me please?
I have tried changing the following rule: .header_area {position:absolute;} to position: fixed; but it didn’t do the trick. I have searched in Google but haven’t found anything that can help me. I also tried changing .header_area.navbar_fixed .main_menu {position: fixed;} to position: absolute (following some advice I found in Google) and it didn't do the trick either.
This is the html for the menu:
<header class="header_area">
    <div class="main_menu">
        <div class="container">
            <nav class="navbar navbar-expand-lg navbar-light">
                <div class="container">
                    <!-- Collect the nav links, forms, and other content for toggling -->
                    <div class="collapse navbar-collapse offset" id="navbarSupportedContent">
                        <ul class="nav navbar-nav menu_nav ml-auto">
                            <li class="nav-item"><a class="nav-link mn_home" href="">Home</a></li>
                            <li class="nav-item"><a class="nav-link mn_projects" href="">Projects</a></li>
                            <li class="nav-item"><a class="nav-link mn_about" href="">About</a></li>
                            <li class="nav-item"><a class="nav-link mn_communiques" href="">Communiqués</a></li>
                            <li class="nav-item"><a class="nav-link mn_donate" href="">Donate</a></li>
                            <li class="nav-item submenu dropdown">
                                <a href="" class="nav-link dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Languages</a>
                                <ul class="dropdown-menu">
                                    <li class="nav-item  mn_english"><a class="nav-link" href="">English</a></li>
                                    <li class="nav-item"><a class="nav-link" href="">Spanish</a></li>
                                </ul>
                            </li>
                            <li class="nav-item"><a class="nav-link mn_contact" href="">Contact</a></li>
                        </ul>
                    </div>
                </div>
            </nav>
        </div>
    </div>
</header>
Menu is loaded through an include with iframe:
<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>Documento sin título</title>
    </head>
    <body>
    <iframe src="/en/inc/menu.html" onload="this.before((this.contentDocument.body||this.contentDocument).children[0]);this.remove()"></iframe><!-- Include code to load navigation menu - - - - - - - - - - - - - - - - - - - - - - - -->
    </body>
</html>
And this is the css that doesn't work when menu is loaded through iframe (the transform: translateY:
.header_area.navbar_fixed .main_menu {
    position: fixed;
    width: 100%;
    top: -70px;
    left: 0;
    right: 0;
    background: #222222;
    transform: translateY(70px);
    transition: transform 500ms ease, background 500ms ease;
    -webkit-transition: transform 500ms ease, background 500ms ease;
    box-shadow: 0px 3px 16px 0px rgba(0, 0, 0, 0.1); 
    }
The expected behavior is that the menu should go up with the page (as shown in: http://project-smac.orgfree.com/en/projects-for-future-humanity.html ) and then come back as position: fixed; to the top of the page, but it just goes up and doesn't come back.
