So, I'd like to set the height of the collapsed navigation of bootstrap to 100% height.
e.g. https://getbootstrap.com/examples/navbar/ this should span over the whole screen.
I did some research and mostly found people using height: 100vh; but this is not dynamics, shouldn't matter too much in the end though, but I still don't like it.
Usually, one could e.g. do:
<div id="bar">
<div id="foo">
test
</div>
</div>
html,
body {
height: 100%;
}
#foo, #bar{
background-color: red;
min-height: 100%;
}
But I'm asking myself now, what's the best approach to implement this when using bootstrap v3.
you can hide the Content while the Navigation is collapsed using JavaScript..
for example: document.getElementById("ID").style.display = none;
if there is no content under the Navigation, there is nothing to scroll... :P
So I'm asking myself then, how I can deactive scrolling when the navigation collapsed?
I somehow fail listening to the proper event
As per your comment, I see the issue is that you dont get the proper point of the collapse. The plugin provides the events on collapse.
By bootstrap documentation this is how you do
$('#foo').on('hidden.bs.collapse', function () {
// do something…
})
Related
I'm trying to make a dashboard frame (in Bootstrap 5, but I don't think it makes any difference) that works like in these two pictures:
This is basically my current situation:
<html>
<body>
<div class="pretoolbar">pretoolbar (non-essential information, to be hidden when scrolling)
</div>
<div class="sticky-toolbar"> sticky toolbar</div>
<div class="container-fluid">
<div class="sidebar col-3">
[tall sidebar content]
</div>
<main class="col-9">
[also tall content]
</main>
</div>
<body>
</html>
CSS:
.pretoolbar{
background-color: #555;
color:white;
height:32px;
}
.sticky-toolbar{
background-color: black;
color:white;
height:56px;
position:sticky;
top:0;
}
.sidebar{
background-color: white;
position: sticky;
top: 56px;
overflow: hidden auto;
max-height: calc(100vh - 56px);
height: 100%;
}
I'm trying several approaches but it doesn't seem working. What I'm trying is of course position: sticky on the main sticky toolbar and on the sidebar. But due to the different available vertical space (scrolled-top vs scrolled-middle), after declaring a height for the sidebar (calc(100vh - 56px), 56px is the height of the toolbar) it results in the bottom part of the sidebar and its scrollbar to fall out of the viewport bottom. I'm considering flexbox, position:fixed, position:absolute... cannot find a way to get it through.
I also discovered a strange behavior (in Chrome at least) when you place a position:sticky inside a position:fixed
My goal would be to avoid JavaScript, I basically need a sidebar that changes its height after the sticky-state of the toolbar and sticky searchbox. (Or, to say it in other words, the top-edge of the sidebar should behave like position:sticky while the bottom-edge should behave like position:fixed;bottom:0).
Can you think of a way of achieving this without using JavaScript?
Please let me know if I am understanding your situation. First I would suggest getting rid off of the *pre-toolbar bar. Otherwise, the desired behavior is impossible without js. And since you mentioned the information there is not essential, you can put it anywhere.
However, if you still want it to be on top, then sticky of position fixed the toolbar and the sidebar. Do not use calc() It is better to use height 100vh and put it behind the toolbar so it seems to be shorter. Then, place a pre-toolbar on top (z-index) of your toolbar and animated it to disappear after some seconds.
Here is a codepen https://codepen.io/oscontrerasn/pen/WNpxJwV
For a webpage grid-layout I decided to use Flexbox. Now I wanted to implement some "auto-functionality", so that grid-boxes can later be inserted without the need to add classes or styles in the HTML. One of this features is to make a box allways be 75% as tall as it is wide - even if the box is resized by, for example, browserwindow resize. Off course, if the boxes content extends the 75%-height, it should (and only then should) increase its height to fit the content. I searched for hours to find a suitable solution, but I finally got it working. So I thought at least, until I added content to the box.
The auto aspect-ratio works fine, as long as the box is empty. If I add content, the 75% of the width is allways added to the height it has through extension by its content. I made a jsfiddle to clearly visualize the problem:
JSFiddle wd5s9vq0, visualizing the following Code:
HTML-Code:
<div class="container">
<div class="content-cell"></div>
<div class="content-cell"></div>
</div>
<div class="container">
<div class="content-cell">
This cell has an inreased height because of
it's content. The empty space below the
content is the 75% of the cells width.
</div>
<div class="content-cell"></div>
</div>
CSS:
.container {
display: flex;
width: 400px;
}
.content-cell {
flex: 1 1 0;
margin: 10px;
background-color: #ccc;
}
.content-cell::after {
content: "";
display: block;
padding-top: 75%;
}
If I didn't knew it better, it looks like a floating-problem - but I think the ::before / ::after selector should add the block-element before the element it is used on and not inside it.
Does anyone has an idea on how to fix this problem?
This seems to be a very widespread problem on the internet, and most solutions you find are either about wrapping the content, absolute-positioning the content or a mixture of both. This has numerous and case-dependent downsides. After hours of playing around with the code, I finally found a combination of CSS proporties that work without the need to add any DOM or make the content absolute-positioned. This looks quit basic, and I am wondering why it took me so long and why you can't find it out there on the web.
The HTML:
<div class="mybox aspect-full">
This is text, that would normally extend the box downwards.
It is long, but not so long that it extends the intended aspect-ratio.
</div>
The CSS:
.mybox {
width: 200px;
}
.aspect-full::before {
content: '';
display: block;
padding-top: 100%;
float: left;
}
The only downside I could find is that the content of your cell must float. If you use clear on one of your child objects, it is positioned below the expander-block and you are back to the original problem. If you need to clear the floating of divs inside of these aspect-ratio-cells, you might consider to wrap them and keep the wrapper floatable.
Can someone help me I'm searching for css/html code example:
I have a webpage with 3 buttons(top, middle, bottom) each specified to 1 div section on my page, lets say my first div section is in the middle of that page div id='middle'.
If I click this button(middle) my page would automatically scroll down from the top
of my page to the div #middle section.
same for the other buttons refered to div id='top', and div id='bottom'
Thanks in forward! I really couldnt find any solution on the internet.
Is there a way to keep my buttonlist on a fixed position so it stays on screen while
moving through sections?
try this:
<input type="button" onClick="document.getElementById('middle').scrollIntoView();" />
For something really basic use this:
Go To Middle
Or for something simple in javascript check out this jQuery plugin ScrollTo. Quite useful for scrolling smoothly.
There is a much easier way to get the smooth scroll effect without javascript.
In your CSS just target the entire html tag and give it scroll-behavior: smooth;
html {
scroll-behavior: smooth;
}
a {
text-decoration: none;
color: black;
}
#down {
margin-top: 100%;
padding-bottom: 25%;
}
<html>
Click Here to Smoothly Scroll Down
<div id="down">
<h1>You are down!</h1>
</div>
</html
The "scroll-behavior" is telling the page how it should scroll and is so much easier than using javascript. Javascript will give you more options on speed and the smoothness but this will deliver without all of the confusing code.
HTML
Top
Middle
Bottom
<div id="top">Top</div>
<div id="middle">Middle</div>
<div id="bottom">Bottom</div>
CSS
#top,#middle,#bottom{
height: 600px;
width: 300px;
background: green;
}
Example http://jsfiddle.net/x4wDk/
Try this:
Scroll to top
If you want smooth scrolling:
html {
scroll-behavior: smooth;
}
Alright, I understand that the purpose of a DIV is to contain its inner elements - I didn't want to upset anyone by saying otherwise. However, please consider the following scenario:
My web page (which only takes up a width of 70% of the entire page) is surrounded by a container (a div). However, under my navigation bar which is at the top of the page, I would like to create w banner that takes up 100% of the width of the entire page (which means it will have to extend outside the bounds of its container as the container is only taking up 70% of the page's width).
This is the basic idea that I am trying to accomplish: http://www.petersonassociates.biz/
Does anyone have any suggestions for how I could accomplish this? I'd appreciate any help.
Evan
If you just want the background of the element to extend across the whole page this can also be achieved with negative margins.
In a nutshell (correction from comment):
.bleed {
padding-left: 3000px;
margin-left: -3000px;
padding-right: 3000px;
margin-right: -3000px;
}
That gives you horizontal scroll bars which you remove with:
body {overflow-x: hidden; }
There is a guide at http://www.sitepoint.com/css-extend-full-width-bars/.
It might be more semantic to do this with psuedo elements: http://css-tricks.com/full-browser-width-bars/
EDIT (2019):
There is a new trick to get a full bleed using this CSS utility:
width: 100vw;
margin-left: 50%;
transform: translateX(-50%);
I guess all solutions are kind of outdated.
The easiest way to escape the bounds of an element is by adding:
margin-left: calc(~"-50vw + 50%");
margin-right: calc(~"-50vw + 50%");
discussion can be found here and here. There is also a nice solution for the upcoming grid-layouts.
If I understood correctly,
style="width: 100%; position:absolute;"
should achieve what you're going for.
There are a couple of ways you could do this.
Absolute Positioning
Like others have suggested, if you give the element that you want to stretch across the page CSS properties of 100% width and absolute position, it will span the entire width of the page.
However, it will also be situated at the top of the page, probably obscuring your other content, which won't make room for your now 100% content. Absolute positioning removes the element from the document flow, so it will act as though your newly positioned content doesn't exist. Unless you're prepared to calculate exactly where your new element should be and make room for it, this is probably not the best way.
Images: you can also use a collection of images to get at what you want, but good luck updating it or making changes to the height of any part of your page, etc. Again, not great for maintainability.
Nested DIVs
This is how I would suggest you do it. Before we worry about any of the 100% width stuff, I'll first show you how to set up the 70% centered look.
<div class="header">
<div class="center">
// Header content
</div>
</div>
<div class="mainContent">
<div class="center">
// Main content
</div>
</div>
<div class="footer">
<div class="center">
// Footer content
</div>
</div>
With CSS like this:
.center {
width: 70%;
margin: 0 auto;
}
Now you have what appears to be a container around your centered content, when in reality each row of content moving down the page is made up of a containing div, with a semantic and descriptive class (like header, mainContent, etc.), with a "center" class inside of it.
With that set up, making the header appear to "break out of the container div" is as easy as:
.header {
background-color: navy;
}
And the color reaches to the edges of the page. If for some reason you want the content itself to stretch across the page, you could do:
.header .center {
width: auto;
}
And that style would override the .center style, and make the header's content extend to the edges of the page.
Good luck!
The more semantically correct way of doing this is to put your header outside of your main container, avoiding the position:absolute.
Example:
<html>
<head>
<title>A title</title>
<style type="text/css">
.main-content {
width: 70%;
margin: 0 auto;
}
</style>
</head>
<body>
<header><!-- Some header stuff --></header>
<section class="main-content"><!-- Content you already have that takes up 70% --></section>
<body>
</html>
The other method (keeping it in <section class="main-content">) is as you said, incorrect, as a div (or section) is supposed to contain elements, not have them extend out of bounds of their parent div/section. You'll also face problems in IE (I believe anything 7 or below, this might just be IE6 or less though) if your child div extends outside the parent div.
I've used the last example on this page for equal height columns.
http://www.ejeliot.com/blog/61
The problem is, when you click an internal anchor link, the content is shifted up, and the overflow is making the top part of the page disappear.
For example, click this link
http://www.noosanativeplants.com.au/~new/articles/botany-words/
Then click a letter to jump to that section. You will notice what I am describing.
Is there a way to combat this, or is this a short coming of the technique? Do you recommend I use the background image technique for faux equal height columns? I'd rather not use this, as one page has a different background, and would require a bit of reworking to do the background for this page.
Thanks
I really recommend you to use the fail-safe faux columns method. If you are not a layout expert (no offence, seriously), stay away from the padding/margin/overflow magic and the one true layout technique. The latter is elegant but it can cause unwanted side-effects if you are to do heavy JS/DOM manipulations and all (see the problems listing).
As slink said you have two overflow: hidden rules in your css:
#main-container {
overflow:hidden;
}
And
#content {
overflow:hidden;
}
If you disable/remove these you will able to use your scrollbars again. Unfortunately the padding / negative margin "hack" will be visible. I recommend you to completely remove this solution and use faux columns. Faux columns background can be added to your #main-content or even the #content div (not just like the example in the ALA article that sets the background image to the body tag).
Good luck!
Update: Sorry, let me correct myself: to use faux columns in your case it is better to set the current background to the html element and the faux background to body element.
Assuming your equal height columns are the left menu and right content in that example, you could just use a margin-left property on the right-column and set the background colour of the container to the desired left-column colour. This would assume your right content always has a greater height than the left, but there are other ways round this.
#container {
width: 960px;
background-color: #000;
}
#menu {
float:left;
width: 240px;
}
#content {
float:right:
margin-left: 240px;
background-color: #fff;
}
<div id="container">
<div id="menu">
<ul>
<li>Home</li>
</ul>
</div>
<div id="content">
stuff goes here
</div>
</div>
The problem is caused by two overflow: hidden; rules defined on elements #content and #main-contaniner.