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Scrollable div can't be scrolled when hovering a fixed element

We all know the 100vh jump on mobile browsers (CSS3 100vh not constant in mobile browser)
In order to prevent that from happening, I wrap the pages scrollable content in a separate div, which works great!
But I still need some fixed elements.
When you now hover the fixed elements and try to scroll, the scroller-div doesn't get scrolled, like body would have with "normal scrolling".
This is obviously really bad and can't stay like this.
It doesn't seem to matter if the fixed elements are siblings, predecessors or ancestors to the .scroll-wrapper. As far as my understanding goes whenever you hover a fixed element and scroll, the browser wants to scroll the fixed elements contents and the scroll-wrapper.
My ideas so far:
Either get a new solution for keeping the address bar from sliding away on scroll.
Or somehow scroll make the browser ignore the attempt to scroll the fixed element and instead scroll the element underneath it, while keeping the fixed element hoverable and clickable.
Or somehow pass on the mousewheel DOMMouseScroll etc. to the .scroll-wrapper
route 2. doesn't is not so promising and I just can't find anything to make route 1. happening, so .. any ideas on how to accomplish the 3. option?
Here is a CodePen to illustrate the problem. https://codepen.io/katerlouis/pen/LQeNbN

strange.. just when the text and CodePen were finished, I found a solution as a suggestion – How to scroll a scrollable div when scrolled on other, non-scrollable div?
solution 3. is possible!
the key is to grab the e.deltaY from the wheel-event on the fixed-elements, and add this to the .scroll-wrapper. If you want to do it with jQuery, the deltaY is "hidden" in e.originalEvent
$(".fixed-element").on("mousewheel DOMMouseScroll wheel MozMousePixelScroll", function(e) {
e.preventDefault();
$(".scroll-wrapper")[0].scrollTop += e.originalEvent.deltaY;
})

overflow-x: scroll and overflow-y:visible nightmare with x-scrolling and dropdown menu

Before i start, I wanted to let you know that I have been searching high and low for a solution to my issue but the closest thread I've found is unfortunately without the answer to the actual problem - Position absolute inside div with overflow-x scroll and overflow-y visible
Essentially I got main page where I am dynamically loading some other pages and on some of them I used dropdown listboxes. It happened that I haven't noticed it earlier as content any of the pages wasn't wide enough for me to spot the problem.
The problem I face is absolutely positioned div (which contain dropdown) and visible horizontal scroll bar on the parent of this div. When I scroll my page horizontally the dropdown div stays in the same place on the screen. I read about "popping out" absolute divs under this link:https://css-tricks.com/popping-hidden-overflow/ but even there, I can observe similar issue I am currently facing, which is appearing of the vertical scroll on the parent element. I am trying to achieve similar effect like here:
http://jsfiddle.net/matcygan/4rbvewn8/7/ but stop vertical scroll bar to appear when the listbox is expanded - instead it should overflow the box and party cover horizontal scroll bar. Here I've found another prompt example how can I achieve it http://jsfiddle.net/b5fYH/ but when i try to play with it and make red boxes scrollable with content as well as overflowing outside of the content vertically, without creating vertical scrollbar, I am failing... I am also fine with using JS if CSS on it's own can't deliver such effect.
In the end after 3 days battle, the CSS won and I need to ask for a help...
Any support will be greatly appreciated.
Thanks in advance.

How to stop image from moving downward when scrolling?

I have created a header image of about half a page. When user scroll down the images goes down with scrolling as well. I want the image to go up and hide and does not effect the content beneath it. I have checked many single page websites websites where images are on some place and when scrolling they goes up and down with scrolling and does not effect the other things.
I tried to use position:fixed but it didn't work, position:relative is also effecting the content beneath it.
Example of what i want : http://www.piedpiper.com/
Kindly tell me how to do this.

Set position:fixed for parent element of image.

How can I disable mouse-drag scrolling on an element with overflow:scroll

I have a container that holds a chart and I wanted to allow the user to click and drag to pan the chart. It works fine until the user drags the mouse outside the container and then the chart is scrolled rapidly in the wrong direction. This seems to be caused by the default scrolling behavior for example if you click and drag in any other element with a scrollbar and drag the mouse out of it, it will begin to scroll.
Is there a way to disable this behavior or some workaround that could make this work?
I only need this to work in chrome (for now at least)

Check out this site. They are using a jQuery plugin dragscrollable, which you can look up or get it from the view source on that page.

Scrolling a div vertically using buttons

I'm building a mobile app using HTML, CSS, Javascript and jQuery.
Is there a way to scroll a div that is longer (700px) than the mobile screen (480px) using only two buttons, one for down and one for up?
So when a user presses and holds the down button it appears to scroll down the div by about 10px at a time.
Edit:
The mobile app is actually being compiled with Phonegap, so it won't be a mobile website but an actual application.
The application features dragging and dropping quite heavily and in order to do this using JQuery and HTML, I've had to bind the mousedown, mouseup and mousehover events to touch events.
Because of this the user cannot simply drag the screen to scroll as they would a typical application. Therefore, I have decided to go with physical buttons instead of scrolling the navigation div.
The navigation div is set to have a greater height than the canvas (screen height and width) div. This will be the div the user is scrolling.

Is the div you're talking about scrolling the full page itself? Or is it a specific div that you want to "scroll" within the page (kind of like an iframe)?
Both can be done. If you're scrolling the full page, I'm not sure why you'd want to use buttons rather than let Safari simply handle the standard swipe gestures. But, it could be done this way:
Use fixed positioning on the buttons so that they don't move as the rest of the screen scrolls.
Use use jQuery's .scrollTop method to do the scrolling.
If, on the other hand, you want to make a scroll effect on a single div, without the rest of the page scrolling, then just do the following:
Wrap that div in another div that has overflow:hidden; position:relative
Make the inner div position:absolute
Animate the inner div's top property to create the scrolling effect.

You may find this plugin useful: http://logicbox.net/jquery/simplyscroll/vertical.html
Anyway, why would you need that? The user may be able to scroll normally with a finger swipe if the content is bigger than the screen.