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

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.


Is it possible to split an elements viewport with javascript/html/css?

I would like to implement a split "viewport" and i'm wondering if it is possible in javascript/css/html.
What I mean is, a scroll area that scrolls similar to a book, where the content that overflows vertically on the left half is shown in continuation on the right. Similar to CSS columns but for a scroll area.
I've played with the idea quite a bit, and the only solution I can think of is to essentially duplicate the content in the left pane in the right pane, synchronize the scroll event, and offset the right area by the element height.
Here is a basic example I made:
However, I'm wondering if there is a solution that doesn't require duplicating the DOM structure of the left pane onto the right. For example is it possible to access the view port/rendering engine directly and show what is "actually" overflowing the scrollarea, and offset it on the page?

Full Width Header Shifts as Scroll Bar Appears

I have a strange question -- my apologies if it is a silly one. Please note the code it too large to reproduce in a snippit so I am posting the link here.
The page I am building is a small intranet page with a full width header. When the user clicks on the button beside the submit button, a div from the top opens and pushes the content down. My problem is in my code editor there is no scroll bar on the page, so when the div opens it pops the entire page slightly over to the left to compensate for the scroll bar.
On codepen, I've pasted the shell of the site, but because a scroll bar is included in its code area, the problem cannot be reperoduced exaclty.
Is there any way I can compensate for the lack of scroll bar in my code? Perhaps force one to be there?
Any help would be grand.
You can force a vertical scrollbar by adding the following CSS rule to the body:
overflow-y: scroll;
EDIT: I misunderstood your question.
Have the whole moving element absolute positioned and wrap it around a container. The scrollbar will appear on the wrapping container, not on the element itself. And because it will be with position absolute there won't be any change of position once the scrollbar appears.

Trying to create a Responsive Scrolling Sticky Menu

I'm trying to create a responsive website in Dreamweaver with a header and menu which initially scroll and then stick to the top of the page.
The header and menu would need to scroll over the top of a fixed hero image.
This hero image can't be defined as a background as it will be powered by a flexslider script to change the image after a set time.
I would also like the sticky header to possibly shrink down in height when it reaches the top of the page, to reduce the amount of screen space it takes up.
I've found a number of sticky menu examples on-line and some seem to have the annoying trait where the content directly below the menu disappears behind it at the point at which the menu sticks to the top of the screen. I would like to avoid this.
Please find a Mock-up of what I'm looking for here
Obviously, all of the above won't be acceptable on a mobile device.
So for mobiles, the header would need to scroll out of the way, leaving just a hamburger style menu fixed at the top of the screen.
I have found a number of examples on-line with elements of what I require, but nothing yet that combines everything.
I've tried cutting and pasting code from different sources, but haven't yet achieved the desired effect.
I don't know if what I'm asking for is workable, but I would appreciate if anyone could point me to examples of how to achieve this (or improve upon what I'm looking for).
Neil White
Use this JS
it adds the class is-sticky to the element which you wanted to stick to top. So you can add height in css for is-sticky class. Which in terms will reduce or increase the height of element when it reaches to top as per your requirement.

Jquery menu acting erratically, bad positioning and general bugs

I've made a horizontal menu.
What it should be doing is having the elements under it line up along the right side in an orderly fashion. Instead, it jumps throughout page seemingly randomly, and has other issues such as flickering. I've been stuck on making it for awhile and would love some tips to resolve these issues. Here is a JS FIDDLE showing the issue, all stripped down.
Here are current issues:
The submenu does not align perfectly with the right side of main nav even though its offset is calculated by main navs offset + width.
Flickering(Moderately solved using large borders)
Elements sometimes doesn't catch mouseover, to reproduce I am moving my mouse all the way down and off and up it and off
The menu slide out part goes to the bottom right of the page, in a somewhat random order, and continues to move further away (yikes)
The solution to the flickering issue is to make the submenu items overlap or touch. This can be done by adding a one-pixel white border to the menu item.
When it comes to the alignment issue (which could have been intended), you need to add (twice) the element's padding and border as the width is inside the padding.

Animated Scrolling with SuperScrollorama + Greensocks

I'm having a little trouble getting my head around a Javascript animated scroll issue.
I'm using the SuperScrollorama Jquery plugin which is built on-top of the Greensock JS tweening library.
The fundamental effect I'm after is to "pin" a section down, then use vertical scrolling to expand some content, then "unpin" the section once the content is fully expanded, so the user can scroll on - i.e. http://blueribbondesign.com.au/example/
But when I try to apply this same effect to multiple sections one after the other, everything gets all broken: the "unpinned" content below the pinned element is pushed off screen and it seems to miscalculate the height of the element when it performs the animation in reverse (i.e. scrolling back up the page). - i.e. http://blueribbondesign.com.au/example2/
I've been endlessly fiddling with the "position:fixed" and "pin-spacer" div, and tried attaching the Superscrollorama plugin to various containing elements, but still cannot work out how to get it to work.
Any help from the brilliant crowd-sourced minds of the web would be much appreciated,
I've been working with this issue myself. What happens is there's a blank div spacer put above the section being pinned with a height that you've defined in the pin() function. Secondly, the pinned element gets a position:fixed assigned to it. Both of these things allow the scroll bar to continue down the page while the element stays affixed. In turn, whatever you had below that section gets bumped down because of that spacer div's height.
If your pinned element is centered horizontally, first give it a left:50%, margin-left:-{width/2}px to fix it from pushing to the left edge.
Next, you'll have to detect the pin/unpin events (which are offered by the plugin as parameters additional to "anim"), and change the section underneath to also toggle a fixed/relative position. When you change that underlying section to be at a fixed position, be sure to set its "top" property to whatever the pinned element's height is. Once the pinned element becomes unpinned, change it back to relative positioning. Does that make any sense?
It seems that different techniques will call for different fixes, but those things are what I'd pay attention to... fixed positioning, and then using the pin/unpin events for adjustment.