Develop Reference

Bootstrap4 Navbar doesn't work with "jQuery.BgSwitcher" in mobile

So I am using Bootstrap4 (Bootswatch4 to be more specific) and I need a div with changing/fading backgrounds. I found that js to be closest to what I want: https://github.com/rewish/jquery-bgswitcher
So I use it like this in https://jsfiddle.net/p5d8rskg/:
$(".banana").bgswitcher({
images: ["image1.jpg", "image2.jpg"],
interval: 5000,
duration: 2000
});
Everything works fine in the desktop version. But the problem is that in mobile version the navbar goes over the div and pushes the content of the div outside. How can I fix this "bug"? Or are there simpler approaches to get the same effect as with "bgswitcher" without that "bug"?
Thanks for your input.

More a hacky solution, but a workable one is to use position: absolute for your .banana container. This way the container is fixed to your defined position.
I have updated your fiddle in order to show the solution:
nav {
z-index: 1000 !important;
}
.banana {
background-color: powderblue;
height: 400px;
width: 400px;
background-size: cover;
color: white;
font-size: 30px;
position: absolute;
top: 56px;
left: 0;
}
Basically i added position: absolute as well as top: 56px (the height of your navbar) and left: 0 to define the position. In order to bring your navbar to the front and not the text apply a bigger z-index to this element.
Good luck!

Removing vertical white space between divs, especially after hitting a breakpoint

I'm working on a responsive page design at the moment and I'm running into an issue with white-space between the divs, especially after hitting breakpoints.
body, html {
padding: 0;
margin: 0;
}
.header {
padding-top: 5px;
background-color: red;
width: 100%;
}
.sub-header {
padding: 5px;
margin: 0px;
background-color: yellow;
width: 100%;
}
.main-content {
padding: 5px;
background-color: blue;
width: 100%;
}
.footer {
position: absolute;
bottom: 0;
padding: 5px;
background-color: green;
width: 100%;
}
#media screen and (max-width: 320px) {
.sub-header {
display: none;
}
}
}
<div class="header">Header
<div class="sub-header">Sub-Header</div>
</div>
<div class="main-content">Auto adjust size</div>
I want to have the blue div take up the remaining space in this white space, as well as after the sub-header is removed at the break point.
<div class="footer">footer</div>
Here's a quick mock up of what I'm experiencing: http://jsfiddle.net/gaych7vp/6/
I understand what I have to do in order to make it take up the remainder of the white space before it hits a breakpoint (I'm assuming just tweaking the height values), but how would I go about making the blue div take up the remaining white space that gets created when the yellow div gets hidden after hitting the breakpoint?
I'm still really new to javascript but from other answers I've read it could be done by creation a function that finds the height of the browser and then subtracts it from the other divs. Is that possible and if so, how could I accomplish that?

Use position:absolute with different top values
.main-content {
position:absolute;
top:51px;
bottom:0px;
}
and
#media screen and (max-width: 320px) {
.main-content {
top: 23px;
}
}
fiddle
Another approach is using display:table and display:table-row
body, html{
width:100%;
height: 100%;
}
body{
display:table;
}
.main-content {
width: 100%;
height: 100%;
display:table-row;
}
fiddle
Make a div fill the height of the remaining screen space

You can use calc on the .main-content div to calculate the size, but you would need to set the heights of the header, footer, and subheader divs. Seems to me though you could just give the body a background color of blue, and achieve the same thing?

Change
#media screen and (max-width: 320px) {
.sub-header {
display: none;
}
}
to
#media screen and (max-width: 320px) {
.sub-header {
visibility: hidden;
}
}
I think this is what you meant. Fiddle.

There's no need for a JavaScript solution here.
The white area is caused because you are using position: absolute to force the footer to the bottom of the window, regardless of the content.
This isn't the normal way to achieve this, you'll run into issues later on when you do add content to your main-content div. You'll find that the footer will be positioned over this content (this will also happen if you shrink the window vertically).
I think what you'd like to do, is give the main-content div a min-height:, this way, the page won't collapse and look terrible if there is little content, but it will stretch naturally when more content is added.
You can also and remove the position: absolute from the footer div.
Here is a demonstration:
http://jsfiddle.net/t46aopas/
** UPDATE **
If you'd like a dynamic solution, I've created a heavily annotated JavaScript example here: http://jsfiddle.net/nahgdkaw/
(I included lots of comments since you said you were new to JavaScript ;) )
That should hopefully help you along the way a little.
Be aware that if the content inside the .main-content div is larger than the .main-content div area, the div will NOT expand to accommodate it.
You can however use the code provided and add in an if statement to, before resizing the .main-content div, check if the .main-content content
is larger than the available area (you may need to add a wrapper div around the .main-content content). If so, then resize the .main-content div to match the .main-content content height (otherwise, perform the resize as it currently is).
(Also, I strongly advise against using HTML tables for anything other than tabular data)

I edited my original answer but don't have the reputation points necessary to add a comment to notify you. I'll remove this answer after you've seen my updated answer above.

Responsive Slider image gets overlapped by menu when browser window expands

Can't seem to source why the image in this full-width slider, when the browser window is fully expanded, gets overlapped slightly by the menu above it.
It looks perfect in mobile, tablet, it's desktop that is posing the problem. Here's a link, open and close the window and you'll see what I mean:
[linked removed]
thanks!

Aha! Found it!
Ok so when your window is small enough to "qualify" as a mobile device, you have one very important property set on your header:
position: static;
This means that the header is in the flow of the document. When you change to desktop size, that gets changed to
position: fixed;
This takes the top header out of the flow of the document, sliding the other content up into its place.
So, to fix this, you can do something like this:
#media screen and (min-width: 700px) /*<--your min desktop width here*/
{
body
{
margin-top: 40px; /*header height here*/
}
}

Was doing some detective work, two things happened, one, I added a fix for a Chrome bug earlier on in the header:
body:after {
display: initial;
position: absolute;
top: 0;
visibility: hidden;
}
And second, needed to compensate for it with padding:
.iosSlider .slider .item img {
width: 100%;
height: auto;
float: left;
padding-top: 15px;
}
Domino effect.

use below code in navigation div css file
position: relative;
z-index: 100;

Sticking side menu to top

I've been looking into sticking a "div" to the top of the screen when you scroll past it, or making the div scroll with the page when it reaches the top of the screen.
The issue i get when i try this matter is that changing to position: fixed; using either jquery or the simple css, removes the float from the element.
My layout look somewhat like this: http://jsfiddle.net/ThSXm/33/ <-- updated
So when the float is removed, the id="content" get's overlapped by the sidemenu, making the sidemenu bigger and out of place.
I need a solution where you dont have to alter the position of the elements or if there is some fix i can make on the content div so it wont get overlapped when changing the positions.
Update
Sandeeproop managed to help me with the positioning, but the scroll matter is still a issue.
As i mentioned in the comment for this question, the div has to scroll/stick to the top of the screen when the div is close to the top or reaches the top (and preferably stop once the div reaches the footer or is close to reaching the footer), because there are more divs (header/slideshow etc) before we reach the side menu, and you wont see the menu if you just use position: fixed.
Any thoughts?
/update
Looking forward to some answers!
//Jim

If i understand you question correctly.
Please check this fiddle.
#nav {
width: 136px;
position: fixed;
background: #FF0000;
margin-left: 1em;
margin-top: 1em;
}
#content{
width: 80%;
height: 600px;
background: #FF9966;
float: left;
margin-left: 170px;
margin-top: 1em;
}

You can set fixed margin-top values for nav and content elements.
Something like that http://jsfiddle.net/ThSXm/26/
#nav {
width: 15%;
height: 100%;
float: left;
background: #FF0000;
margin-left: 1em;
margin-top: 60px;
}
#content{
width: 80%;
height: 600px;
background: #FF9966;
float: left;
margin-left: 1em;
margin-top: 60px;
}

I guess what you are looking for is "position: sticky".
This is not yet supported by many browsers, but here is a pollyfill for it
http://philipwalton.github.io/polyfill/demos/position-sticky/

Have you considered a solution where you use position:absolute on the element?
Have it being absolute untill you need it to stick and then change it to fixed.
Here is a simple fiddle:
http://jsfiddle.net/dXe97/
if ($(this).scrollTop() > boxTop) {
$box.css({
'position':'fixed',
'top': 0
});
}else{
$box.css({
'position':'absolute',
'top': 150
});
};
The .box element is absolute positioned, but when you scroll down passed the element, it is changed to fixed and its top value is set to 0, and back again when you scroll up.

Floating menu bar using HTML/CSS?

wondered if any one knew of a way of creating a floating menu bar that sticks to a point on a page until the browser window gets far enough down the page and unsticks it and then the menu bar begins to scroll along with it. The effect I want is the exact same as this http://www.jtricks.com/javascript/navigation/floating.html javascript menu. However, I really want to do this with CSS. I am aware I can make the div Absolutely positioned and it will move down the page, I tried making one DIV relative positioned (parent div) and then another div inside this which was absolute positioned, but I could not get this to work. Does any one know how to make this work with CSS or does it need to be JS?
Thanks in advance.
Jon.

I believe using javascript is the only solution to get the effect you described. Here's a quick demo of a banner that starts in a absolute position and goes to fixed when the user scrolls.
<div style="height:1000px;width:500px;">
<div id="floatbar" style="background:gray;
width:200px;
height:40px;
position:absolute;
left:0;top:200px;">
</div>
</div>
$(window).scroll(function(){
if ($(window).scrollTop() >= 200)
{
$("#floatbar").css({position:'fixed',left:'0',top:'0'});
}
else
{
$("#floatbar").css({position:'absolute',left:'0',top:'200px'});
}
});

well if you do NOT need the animation, than just use
position: fixed;
in the css.
if you want it animated you need to use javascript.
for example in jquery:
$(window).scroll(function(){
$('#menu').css({
right: 0,
top: 0
})
})

Well you can't do it with absolute positioned div inside of a relative. Fixed position is basically an absolute positioned div, positioned relatively to the window. I'd say you definately need javascript here.

This should be rather easy with a fixed sidebar, and a floating content section. Try something like this...
#container {
width: 960px;
margin: 0 auto;
overflow: hidden;
position: relative;
}
#sidenav {
width: 300px;
position: fixed; /*--Fix the sidenav to stay in one spot--*/
float: left; /*--Keeps sidenav into place when Fixed positioning fails--*/
}
#content {
float: right; /*--Keeps content to the right side--*/
width: 620px;
padding: 0 20px 20px;
}

This is old post but CSS has changed a lot since then, we can do a floating menu with plain CSS. See sample code below. Credit to https://www.quackit.com/css/codes/css_floating_menu.cfm
main {
margin-bottom: 200%;
}
.floating-menu {
font-family: sans-serif;
background: yellowgreen;
padding: 5px;;
width: 130px;
z-index: 100;
position: fixed;
right: 0px;/* You can change float left/right */
}
.floating-menu a,
.floating-menu h3 {
font-size: 0.9em;
display: block;
margin: 0 0.5em;
color: white;
}
<!DOCTYPE html>
<title>Example</title>
<main>
<p>Scroll down and watch the menu remain fixed in the same position, as though it was floating.</p>
<nav class="floating-menu">
<h3>Floating Menu</h3>
CSS
HTML
Database
</nav>
</main>

I believe it needs to be JS. I can imagine it can be rather simple with jQuery and I really cannot think of any way to achieve this only with CSS. I'll try to think about it, but I doubt I'll find a solution.