Javascript – position:fixed not playing nice with off canvas menu in Chrome and IE

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What's intended

I'm using a off canvas menu using CSS and JavaScript. The off canvas menu is working as intended. I want a sidebar menu that is left of the screen and moves along when the menu is triggered. The idea is to have a menu trigger that is 100px across and has a height of 100% and always left of the screen. Using position absolute I had problems with the height on all browsers, using fixed position Firefox works fine but encounters problems mentioned below.

Errors

Firefox Issues: None, as far as I can tell.

Chrome Issues: After scrolling a few pixels down the sidebar menu trigger does not stretch the entire page.

Internet Explorer: The sidebar seems to vanish completely when the sidebar menu is triggered.

jsFiddle

Because my code is heavy on both HTML, CSS and JavaScript I have included a jsFiddle. Please note that the problem only occurs on Chrome and Internet Explorer as far as I know. You can replicate the problem by scrolling down the page a little and then clicking the left hand side menu button.

Screenshots

Off Canvas Menu Issues

NOTE WORTHY HTML CODE (Full Code in Fiddle) 

<div id="sbContainer" class="sbContainer">
    <div class="sbPush">
        <header class="contain-to-grid sbMenu sbFX">
            <nav class="top-bar" data-topbar>
                <ul class="title-area show-for-small-only"><!--SITENAME--></ul>
                <section class="top-bar-section"><!--LINKS--></section>
            </nav>
        </header>
        <div class="sbContent-one">
            <div class="sbContent-two">
                <div class="sbMenuTrigger" data-effect="sbFX"><!--SIDEBAR TRIGGER--></div>
                <div class="sbMainContent" role="document"><!--PAGE CONTENT--></div>
            </div>
        </div>
    </div>
</div>

NOTE WORTHY CSS CODE (Full Code in Fiddle)

html, body, .sbContainer, .sbPush, .sbContent-one {
    height:100%
}
.sbContent-one {
    overflow-x:hidden;
    background:#fff;
    position:relative
}
.sbContainer {
    position:relative;
    overflow:hidden
}
.sbPush {
    position:relative;
    left:0;
    z-index:99;
    height:100%;
    -webkit-transition:-webkit-transform .5s;
    transition:transform .5s
}
.sbPush::after {
    position:absolute;
    top:0;
    right:0;
    width:0;
    height:0;
    background:rgba(0,0,0,0.2);
    content:'';
    opacity:0;
    -webkit-transition:opacity 0.5s,width .1s 0.5s,height .1s .5s;
    transition:opacity 0.5s,width .1s 0.5s,height .1s .5s
}
.sbMenu-open .sbPush::after {
    width:100%;
    height:100%;
    opacity:1;
    -webkit-transition:opacity .5s;
    transition:opacity .5s
}
.sbMenu {
    position:absolute;
    top:0;
    left:0;
    z-index:100;
    visibility:hidden;
    width:244px;
    height:100%;
    background:#872734;
    -webkit-transition:all .5s;
    transition:all .5s
}
.sbMenu::after {
    position:absolute;
    top:0;
    right:0;
    width:100%;
    height:100%;
    background:rgba(0,0,0,0.2);
    content:'';
    opacity:1;
    -webkit-transition:opacity .5s;
    transition:opacity .5s
}
.sbMenu-open .sbMenu::after {
    width:0;
    height:0;
    opacity:0;
    -webkit-transition:opacity 0.5s,width .1s 0.5s,height .1s .5s;
    transition:opacity 0.5s,width .1s 0.5s,height .1s .5s
}
.sbFX.sbMenu-open .sbPush {
    -webkit-transform:translate3d(300px,0,0);
    transform:translate3d(244px,0,0)
}
.sbFX.sbMenu {
    -webkit-transform:translate3d(-100%,0,0);
    transform:translate3d(-100%,0,0)
}
.sbFX.sbMenu-open .sbFX.sbMenu {
    visibility:visible;
    -webkit-transition:-webkit-transform .5s;
    transition:transform .5s
}
.sbFX.sbMenu::after {
    display:none
}
.no-csstransforms3d .sbPush,.no-js .sbPush {
    padding-left:244px
}
.sbMenuTrigger {
    background-color:#b23445;
    cursor:pointer;
    height:100%;
    width:100px;
    position:fixed;
    left:0;
    top:0
}
.sbMainContent {
    margin-left:100px;
    width:calc(100% - 100px);
    top:0;
    padding-top:50px;
    position:absolute;
    height:100%
}

Best Answer

Here is a work-around that requires very little changes.

It works consistently in the latest versions of FF, Chrome, and IE11/10.

Updated Example

.sbContent-one {
  overflow: visible;       /* Or remove overflow-x: hidden */
}
.sbMainContent {
  overflow-x: hidden;
}
.sbMenuTrigger {
  position: static;        /* Or remove position: fixed */
}

The easiest way to resolve the issue in Chrome is to simply move the overflow from .sbContent-one to .sbMainContent. In doing so, you can't actually scroll past the .sbMenuTrigger element (which resolves the issue) since .sbMainContent is a sibling element.

There are currently many inconsistencies across browser around how fixed elements are positioned relative to elements that are transformed using translate3d. The issue in IE was due to the fact that fixed elements are positioned relative to the window without taking the elements that are transformed using translate3d into account. To solve this avoid fixed positioning completely, and add the element .sbMenuTrigger back into the normal flow by removing position: fixed (or overriding that with position: static, the default). In doing so, the sidebar expands as expected.

In other words:

  • Remove overflow-x: hidden from .sbContent-one (or override it with overflow: visible).
  • Add overflow-x: hidden to .sbMainContent.
  • Remove position: fixed from .sbMenuTrigger (or override it with position: static).
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