Fixed page header overlaps in-page anchors

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逝去的感伤
逝去的感伤 2020-11-22 00:25

If I have a non-scrolling header in an HTML page, fixed to the top, having a defined height:

Is there a way to use the URL anchor (the #fragment part) t

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  • 2020-11-22 00:33

    This is how I got it to finally go to the proper place when you click on the navigation. I added an event handler for the navigation clicks. Then you can just use "scrollBy" to move up on the offset.

    var offset = 90;
    
     $('.navbar li a').click(function(event) {
        event.preventDefault();
        $($(this).attr('href'))[0].scrollIntoView();
        scrollBy(0, -offset);
     });
    
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  • 2020-11-22 00:34

    Here is a complete jquery solution that will work in IE:

    Suppose the navigation bar elements are something like this:

    <ul>
        <li><a class="navigation" href="/#contact-us">Contact us</a></li>
        <li><a class="navigation" href="/#about-us">About us</a></li>
    </ul>
    

    You can use the following jquery snippet to offset the scroll:

    $(function() {
        $("a.navigation").click(function(event) {
            event.preventDefault();
            offSetScroll($(this));
        });
        offSetScrollFromLocation(window.location.href.toLowerCase());
    });
    
    function offSetScroll(anchor) {
        var href = anchor.attr("href");
        offSetScrollFromLocation(href);
    }
    
    function offSetScrollFromLocation(href) {
        //Change this according to the height of the navigation bar
        var fromTop = 250;
        if(href.indexOf("#")<=0)
            return;
        var hash=href.substring(href.indexOf("#"));
        var targetOffset = $(hash).offset().top-fromTop;
        $('html, body').animate({scrollTop: targetOffset}, 400, function(e) {
    
        });
    }
    
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  • 2020-11-22 00:35

    The best way that I found to handle this issue is (replace 65px with your fixed element height):

    div:target {
      padding-top: 65px; 
      margin-top: -65px;
    }
    

    If you do not like to use the target selector you can also do it in this way:

    .my-target {
        padding-top: 65px;
        margin-top: -65px;
    }
    

    Note: this example will not work if the target element have a backgound color that differant from his parent. for example:

    <div style="background-color:red;height:100px;"></div>
    <div class="my-target" style="background-color:green;height:100px;"></div>
    

    in this case the green color of my-target element will overwrite his parent red element in 65px. I did not find any pure CSS solution to handle this issue but if you do not have another background color this solution is the best.

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  • 2020-11-22 00:35

    You can now use scroll-margin-top, which is pretty widely adopted.

    Simply add the following CSS to the element you want to scroll to:

    .element {
      scroll-margin-top: 2em;
    }
    
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  • 2020-11-22 00:35

    I've got it working easily with CSS and HTML, using the "anchor:before" method mentioned above. I think it works the best, because it doesn't create massive padding between your divs.

    .anchor:before {
      content:"";
      display:block;
      height:60px; /* fixed header height*/
      margin:-60px 0 0; /* negative fixed header height */
    }
    

    It doesn't seem to work for the first div on the page, but you can counter that by adding padding to that first div.

    #anchor-one{padding-top: 60px;}
    

    Here's a working fiddle: http://jsfiddle.net/FRpHE/24/

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  • 2020-11-22 00:39

    I wasn't having any luck with the answer listed above and ended up using this solution which worked perfectly...

    Create a blank span where you want to set your anchor.

    <span class="anchor" id="section1"></span>
    <div class="section"></div>
    

    And apply the following class:

    .anchor {
      display: block;
      height: 115px;       /* same height as header */
      margin-top: -115px;  /* same height as header */
      visibility: hidden;
    }
    

    This solution will work even if the sections have different colored backgrounds! I found the solution at this link.

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