Develop Reference

How to remove sticky/fixed header from Weebly website containing JavaScript?

So I'm currently designing a website on Weebly. However, the theme that I'm using contains a sticky/fixed navigation menu. So whenever I scroll up or down, the nav bar always sticks to the top. I want it so that the nav bar stays in an absolute position and doesn't stay fixed to the top when scrolling.
I've tried editing the CSS and changing the position of the "header" from
position: fixed; to position: absolute; but that doesn't seem to have done anything at all. The main trouble is that my website contains JavaScript too which I believe also has some control over the position of the header. I've found certain parts of JS code which I believe have some influence over the sticky function.
if ($body.hasClass('header-sticky-up')) {
base._utils.onScrollDirection({
down: function(currentScrollTop) {
$header
.removeClass('is-visible')
.toggleClass('is-sticky', (currentScrollTop > headerHeight * 2));
base._closeAllDropdowns();
},
up: function() {
$header.addClass('is-visible');
},
Does anyone with a JS background have a fix to this?
Also the "header-sticky-up" relates to a function in the CSS part of the code which goes like this:
body.header-sticky-up & {
position: fixed;
&.is-sticky {
.translate3d(0, -100%, 0);
.transition(transform 0.2s ease-out);
}
&.is-visible {
.translate3d(0, 0, 0);
}

use position:absolute!important in your styling

Sticky header that is transparent over main banner?

I've built a client's site on Squarespace.
I want to create a header that:
1) Has a transparent background when the user first arrives on the page
2) When the user scrolls down, gets a background color and remains affixed to the top of the viewport.
Thanks!

Some info
CSSTricks have a great little example on how to do this (this is the common solution for this).
The basics for this solution is that you listen to the scroll event and check when you get to the right spot (you can calculate that spot programmatically if you want). If you do, you add a class to the header that does the following:
makes the header colored like you wanted it to be
make the header position: fixed; top: <num>; or position: absolute; top: <num> (I've seen both solutions out in the field)
!IMPORTANT! the position:absolute solution is less safe, since position: fixed positions the element relative to the viewport. position:absolute will do the same only if it doesn't have any predecessor with a position:relative [for more info, check this link ]
There's an experimental css feature for position which will add a position: sticky option. In theory, this will do the sticky part by itself [You can see it's experimental by the Experimental Badge next to it on MDN].
The actual solution
https://css-tricks.com/scroll-fix-content/
It also includes a demo with the code on codepen.io. Just notice that you need to scroll the view box (class="wrap") and not the page itself.

You have to combine a few things.
First of all, in your css set for the header position: fixed
You have then to set the transparency. Something like should be enough: opacity: 0.5. You can even use RGBA to specify both color and transparency (I like this one more): background-color: rgba(255, 0, 0, 0.3)
Last, you have to bind an handler to to scroll event with JavaScript. If you can use jQuery, something like this should suffice (I suppose you have an element with id="header"):
$("#header").scroll(myScrollHandler);
function myScrollHandler () {
if (window.pageYOffset > 50)
{
$("#header").fadeTo(200, 0.9);
}
else
{
$("#header").fadeTo(200, 0.3);
}
}
I used sample values, the first one is the duration in ms, the second the target opacity, where 0 is invisible and 1 is full. In the if I compare the offset of the page to the number of pixels after wich the header will start appearing.
So, to recap, in your css you should have something like this:
#header {
position: fixed;
top: 0;
width: 100%;
rgba(255, 0, 0, 0.3);
}
in your html something like this
<script>
$("#header").scroll(myScrollHandler);
function myScrollHandler () {
if (window.pageYOffset > 50)
{
$("#header").fadeTo(200, 0.9);
}
else
{
$("#header").fadeTo(200, 0.5);
}
}
</script>
<div id="header">
Your header content
</div>

The height of the menu is not correct CSS

I'm working in a home page, it's working correctly, but the menu on the left sidebar, it's not making and overflow correctly. I need the scrollbars on the menu, 'cause I don't want it on the page.
I think the issue it's with the height, but I need the 100% of the height not in pixels, somebody can help me?
Here you are de JsBin: http://jsbin.com/ceyij

It is because you have only given 99% height to your html.Just make it 100%

In ceyij.css, you have given height:99% !important in html and body tag
and also give overflow:hidden so
just remove height 99% and give overflow:auto instead of hidden
it not proper look like

In order for an element to have 100% height, the parent element that wraps it must also have either a fixed or percentage height.
So with that in mind you will need 100% heights on both the HTML and BODY tags like this:
html, body
{
height:100%;
width:100%;
}
For the particular list items
#menu_panel {
height:100%;
position: absolute;
left: 0;
top: 0;
overflow:hidden;
}

I've got the best result with the following thanks to jQuery
$(document).ready(function() {
// Handler for .ready() called.
var alt = $(".wrapper").height();
$(".left-side").height(alt);
$(".sidebar").height(alt - 153);
var altHeader = $("header.header").height();
$(".sidebar-menu").height(alt - 153);
});

Hiding an element with hide() causes a page "jump"

I'm trying to create an effect where I display a big logo on page load. When the user scrolls pass the logo and navigation, I want to display a fixed nav bar with a smaller logo. I then want to hide the big logo so that when the user scrolls to the top they still see the fixed nav bar (i.e. the big logo and original navigation stay hidden).
However, when I remove a big block element with the .hide() property it causes the page to "jump" as the display:none property gets set. This reduces the usability of the page, as the location jumps the size of the element that was removed, potentially confusing users.
Is there a way I can get the effect I want, while still providing a smooth experience to the user? I've been thinking of potential options, but have been drawing blanks. Hoping you guys can inspire me :)
A simple JS fiddle can be seen here: http://jsfiddle.net/darudude/vA5WG/ (Note: You'll have to increase the result section to 720+px to get it to work properly - I'm still working on the responsive part)
The code in question:
function UpdateTableHeaders() {
var menu = $(".main_nav_menu"),
offset_top = menu.offset().top;
var scrollTop = $(window).scrollTop();
if (scrollTop > (offset_top + menu.height()))
{
$(".clone").addClass("floating_header");
$(".big_logo").hide();
}
}
$(window).scroll(function(){
UpdateTableHeaders();
});

You can try this ,
Add a new style
<style>
.hide {
position: absolute !important;
top: -9999px !important;
left: -9999px !important;
}
</style>
And change your JS to
$(".big_logo").addClass('hide');
Instead of
$(".big_logo").hide();

Use visibility:hidden then
$(".big_logo").css('visibility','hidden');

Maybe it is because a different browser - margin/padding thing. Have you tried to add this to the body element (or to the container element if it inherits some margins/paddings)
body{
margin:0;
padding:0;
width:100%;
}

Dynamic Background Scrolling

Here's a link to what I'll be referring to.
I'm having some trouble getting the background image to work the way I'd like it to.
I want the background to auto resize based on the width of the window, which it is already doing correctly. If you make your window smaller you'll see the background shrink with it.
Here's the issue. If you make your window wide (short) then the background will resize and go too high so you can't see the top of the background anymore (since the background is bottom positioned).
I want the background to be top position when you are at the top of the page, and as you scroll down it will slowly move to be bottom positioned. Sort of like the effect of an Android phone's background when you move left and right. Of course, keep in mind that I still want the background to auto-resize when you make the window smaller.
html {
background-color: #70d4e3;
height: 100%;
}
body {
height: 100%;
}
.background {
margin-top: 45px;
width: 100%;
position: fixed;
bottom: 0;
left: 0;
z-index: -9999;
}
.banner {
margin: 0px auto;
width: 991px;
margin-bottom: -9px;
}
.content {
background: url("http://i.imgur.com/daRJl.png") no-repeat scroll center center transparent;
height: 889px;
margin: 0 auto;
width: 869px;
}
.innerContent {
padding: 30px;
}
<img src="http://i.imgur.com/6d5Cm.jpg" alt="" class="background" />
<div class="banner">
<img src="http://i.imgur.com/JptsZ.jpg" alt="" />
</div>
<div class="content">
<div class="innerContent">
testing
</div>
</div>
Maybe some javascript or jquery would be needed to achieve this.

Well, this was fun, thanks!
I hope you don't mind me taking the liberty to use percentages to make my life a little bit easier and possibly the script slightly more robust since I can reliably use floats with percentages.
What I did is make the layout, html and css comply with the rules you need for the bg to be animated properly, they stayed largely the same from what you had.
Then it was just a question of figuring out the calculations needed with the right properties to figure out the percentage you were from the top, the *20 is actually the amount of space 'left' to fill by the background image in percentages (as the background height is 80%).
They I moved the calculations to a function so I could call that on scroll and on window resize, making sure it's initiated on any event that modifies the window somehow...
Didn't do extensive testing but it worked in Chrome and I'm tired :p
I believe this is what you are looking for:
http://jsfiddle.net/sg3s/RSqrw/15/ See edit 2
If you wanted this the other way arround just make the page background start at the top and modify that:
http://jsfiddle.net/sg3s/RSqrw/14/ See edit 2
Edit:
As a bonus, and since I had never actually written jquery script as a 'plugin', I decided to convert this into one. What I came up with should be easy to implement and use!
http://jsfiddle.net/sg3s/RSqrw/52/ See Edit 3
Functionality successfully tested in Chrome, Firefox 3.6, IE9 + compatibility mode
Edit 2:
Reading the question again checking if I did it right I noticed I didn't quite do what you want, so I updated the link in the first edit which gives you a plugin in which you can have several options for the scrolling background. It retains my 'old' interpetation while also doing what you want... Read comments in code for some extra descriptions.
Edit 3:
As I went to work today I was bothered with the fact that my plugin 'try' was a little bloated. And as you mentioned in the comment it didn't quite fit the requirements.
So I rewrote it to only do what you want and not much more, tested in Chrome Firefox, IE9 +compat etc etc.. This script is a lot cleaner.
http://jsfiddle.net/sg3s/vZxHW/
You can chose to make the background stick to the top or bottom if the height fits in the window. Nothing else, but that is already more than enough to do some pretty cool stuff :p

An exact solution: Fiddle: http://jsfiddle.net/srGHE/2/show/
View source
Thanks for the challenge. See below for the solution, which is complying with all requirements, including recommended yet optional (with steps on how to remove these) features. I only show the changed parts of your page, with an explanation after each section (CSS, HTML and JavaScript):
CSS (changes):
html,body{
margin: 0;
height: 100%;
padding: 0;
}
body{
background-color: #70d4e3;
}
#background { /*Previously: .background*/
/*Removed: margin-top: 45px;
No other changes*/
}
#banner /*Previously: .banner; no other changes */
#content /*Previously: .content; no other changes */
#innerContent /*Previously: .innerContent; no other changes */
Explanation of CSS revisions:
margin-top:45px at the background is unnecessary, since you're absolutely positioning the element.
All of the elements which are unlikely to appear more than once should be selected via the id (#) selector. This selector is more specific than the class selector.
HTML (changes):
All of the class attributes have been replaced by id. No other changes have been made. Don't forget to include the JQuery framework, because I've implemented your wishes using JQuery.
JavaScript (new):
Note: I have added a feature which you didn't request, but seems logical. The code will automatically reserve sufficient margin at the left side of the window in order to always display the background. Remove anything between the marked comments if you don't want this feature.
$(document).ready(function(){
//"Static" variables
var background = $("#background");
var marginTop = parseFloat(background.css("margin-top")) || 0;
var bannerWidth = $("#banner").width(); /*Part of auto left-margin */
var extraContWidth = (bannerWidth - $("#content").width())/2; /*Same as above*/
function fixBG(){
var bodyWidth = $("body").width();
var body_bg_width_ratio = bodyWidth/1920;
var bgHeight = body_bg_width_ratio * 926; //Calcs the visible height of BG
var height = $(document).height();
var docHeight = $(window).height();
var difHeight = bgHeight - docHeight;
var scrollDif = $(document).scrollTop() / (height - docHeight) || 0;
/*Start of automatic left-margin*/
var arrowWidth = body_bg_width_ratio * 115; //Arrow width
if(bodyWidth - bannerWidth > arrowWidth*2){
$("body > div").css("margin-left", "auto");
} else {
$("body > #banner").css("margin-left", arrowWidth+"px");
$("body > #content").css("margin-left", (arrowWidth+extraContWidth)+"px");
}
/*End of automatic left-margin*/
if(difHeight > 0){
background.css({top:(-scrollDif*difHeight-marginTop)+"px", bottom:""});
} else {
background.css({top:"", bottom:"0"});
}
}
$(window).resize(fixBG);
$(window).scroll(fixBG);
fixBG();
});
Explanation of the JavaScript code
The size of the background is determined by calculating the ratio of the background and document width. The width property is used, because it's the most reliable method for the calculation.
Then, the height of the viewport, document body and background is calculated. If applicable, the scrolling offset is also calculated, to prepare the movement of the background, if necessary.
Optionally, the code determines whether it's necessary to adjust the left margin (to keep the background visible at a narrow window).
Finally, if the background arrow has a greater height than the document's body, the background is moved accordingly, taking the scrolling position into account. The arrow starts at the top of the document, and will move up as the user scrolls (so that the bottom side of the arrow will be the bottom of the page when the user has fully scrolled down). If it's unnecessary to move the background, because it already suits well, the background will be positioned at the bottom of the page.
When the page has finished loading, this functionality is added to the Resize and scroll events, so that the background is always at the right location.
If you've got any other questions, feel free to ask them.

well, I'm not sure if I understand you and why do you want to do that, but you can try adding 2 backgrounds (see http://www.css3.info/preview/multiple-backgrounds/ ), one with the top bg and another with the bottom bg but I think that if the page is not too long it will cause issues, so the other answer with pure CSS is as follows: first add 3 horizontal divs with 100% width. Top div will have your top bg and its height, middle div will be transparent and auto height and bottom div will have your bottom bg and its height. All divs will have a 0 z-index. Then create a higher z-index div to act as a container and you'll be set. If I understand your question right, that's the close I can think of to achieve that. This being said, I'm pretty sure you can do this with JQuery with way better results

Using jQuery I was able to give you what I think you're asking for:
$(window).scroll(function() {
var h = Math.max($(document).height(), $(window).height());
var bottom = h - $(".background").height() - $(window).height();
$(".background").css("top", (($(window).scrollTop() / h) * bottom) + "px");
});
EDIT: Forgot to account for the way scrollTop reports position.

Or maybe:
.background {
margin-top: 45px;
max-width: 100%;
position: fixed;
bottom: 0;
left: 0;
z-index: -9999;
max-height: 100%;
}

I reccomend using jQuery Background Parallax
http://www.stevefenton.co.uk/Content/Jquery-Background-Parallax/
The function is as simple as
$("body").backgroundparallax();
Ask if you don't get it to work.

#abney; as i understand your question may that's you want http://jsfiddle.net/sandeep/RSqrw/60/
you need only css for this:
#background {
position: fixed;
width: 100%;
height:100%;
top: 0;
left:0;
z-index: -1;
}

The solution to your issue is a nice little lightweight plugin by Scott Robin. You can get more info, download it, and make your life easier for all of your projects by visiting his project page here.