I'm curious what is the purpose of html, body{width:100%} in the css file? Is it kind of css reset code?
Disabling this piece of code doesn't affect on what I see in the browser. Is it a "bugfix" for some old browser or for mobile devices? Am I missing something?
Could anybody please explain?
Thank you.
As far as I know, width:100% is used when you want a block-level element to fill any remaining space inside it's parent or when an element is inheriting a set width value that you want to override. But in most cases it is unnecessary or will bring undesirable results.
As far I know it's not necessary maximum time, some time not mentioning this is creates problem with IE browser by improper formatting of the content. otherwise there is no need.
Understand it this way.
HTML is parent of BODY.
BODY is parent of the content.
Body looks to its parent (HTML) for how to scale the dynamic property, so the HTML element needs to have it's height set.And since the content of body will probably need to change dynamically. Setting min-height of the body to 100% makes that happen.
If we are using overflow:hidden with body and the body isn't able to take the height of dynamic content then the part outside the body height won't be visible .
Now the question is
When doesn't the body take the height of the dynamic content ?
When we are using floating elements .The height of the floating elements are not calculated by the parent until we use overflow:auto.
Related
I ran into this issue while implementing a sticky footer solution. I have the footer working well, but my body element which encompasses everything within the tag just will not auto-extend beyond a random point further down that can only be reached by scrolling down (it's a lengthy page). My intention is for the body container (does that sound morbid or what?) to auto extend past all the div elements it contains. Isn't that what it's supposed to be doing? Right now there are still div elements sitting further down from where it ends, and the footer is sitting in the middle of my page right below it. If I can't achieve this behavior, I'll have to set the body to a fixed position in css, which I don't want to do.
Using the following CSS styling doesn't work, probably because my content extends beyond a page.
html, body {min-height: 100%; height: 100%;}
Can someone articulate what the most likely issues could be? Also, feel free to make any constructive comments on my code. This is my first web project.
Here's a link to my HTML code on CodePaste: HTML Code
And here's a link to my CSS code: CSS Code
Lastly, a link to a screenshot of my webpage showing the issue. Screenshot
The green bar is the footer, and the red border is the body element styled in css so it can be viewed. You'll see it ends right after the picture.
I'm pretty sure your main problem is setting the height of the body tag. Try not giving it a height (no max-height or height tags) or giving it height: auto to make it expand as its contents.
It could also be that you are setting child elements to positon: absolute which means that the parent will collapse to the size of whatever non-absolute elements are inside it.
Also, why the <p1> tags? They should be just <p>.
Code criticism:
It was extremely difficult to figure out what the problem was and I'm not sure that I gave the correct solution because of the way you showed your code. In future, try to give your code as a JSFiddle or a Codepen.
Also, consider using a CSS framework which will reduce the amount of CSS code you write a lot. I would suggest Bootstrap or Materialize but Bootstrap is more widely used.
Don't forget to follow CSS guidelines which will make your code more readable.
You could stretch the element to the full height of the window using vh.
.container{
height: 100vh;
}
You could then position your footer to the bottom using absolute position.
footer{
position: absolute;
bottom: 0;
}
I've used this in the past for full page landing pages that aren't meant to scroll.
I don't exactly know what the question is asking, but I experimented a bit and figured that if you remove the 1 from the <p1> so you would have a normal <p> tag, it moves the text up completely. I have a very rough JS Fiddle.
Thanks to all who contributed. Based on suggestions from Sankarsh and Ori, I was able to solve the problem. Once I changed my div to just as they suggested, I noticed it began functioning as I intended and forcing the parent element down beneath it. Unfortunately, that only solved the problem for that element alone. That led to me discovering the element had a default "static" position, while most of my other elements were set to "absolute". After changing the positions of the bulk of my content to "relative" or "static", everything is working as intended!
TLDR: If you want a child element to stay within the boundaries of its parent element, you need to set the child's position to "static" or "relative". You cannot use "absolute". This way, instead of overflowing beyond the border of the parent, the child will automatically extend the parent's border to its intended position.
I have an html element that I want to be height 400px. I set that via style tag and css. The contents of this element only extend to 350px. I want the remainder 50px to be the margin-bottom of this element.
Now it is the classified as the actual element rather than margin. Is there an elegant css solution to this?
I know this can be done with javascript, but I'd prefer not to as the element has varying height and I would have to add more to the on-load and on-resize functions, making it more laggy to resize.
Thanks
First of all, it would be a good idea to post a live demo of your needs, either on CodePen or JSFiddle. This allows us to understand your problem, so that we can solve it.
On to your question, the remaining space should act as a margin without any additional code. Here's a demo: http://codepen.io/awesomeaniruddh/pen/bVwZdM
This is the HTML code in the codepen:
<section class="foo">
Foo
</section>
Bar
There is one line of text in the HTML element, whose height is set to 400px. There is another line of text after the element. The margin is automatically applied.
Hope I helped. If I misunderstood your question, please let me know!
When looking at other people's code (or many CSS resets), I see the html element addressed with basic styling (like height: 100%) and sometimes I see it ignored completely. In my experimentation there is no difference, but I am not sure if I am missing something.
In this post they give the example of
html,body{
min-height: 101%;
}
to keep scrollbars visible (but no other definitive answer). Other than a hack like this, is there any specific reason to style the html element?
Well the major reason i can think of is that, for specifying height in % the elements parent needs to have a height set explicitly.
Assume you've a container <div> which you need to be of 100% height and responsive. simply applying height:100% won't work unless you specify a height for it's parent <body>.
Hence we'll apply height:100% for the <body> - Now, this won't work since <body>'s parent doesn't have a height set explicitly - which is our <html> element.
Hence we apply
html{
height:100%;
}
...!
This is not required if your design is not responsive , i.e if you're setting fixed dimensions in pixels
This is used for making height:100% relative to the viewport height.
As I understand it, it is the html element that displays scrollbars. So if you don't want to display scrollbars at all for some reason you would need to hide overflow on that element.
More information about the html element here
I am having a problem determining which CSS class definition is stopping the left sidebar (the one with the pinkish background) from growing in height on this page.
I should have mentioned previously that I have tried everything I can think of and researched many questions on here, including adding height:auto; and overflow:auto; to col-left, sidebar, col-main and all others already.
Can someone help me identify it?
At a glance, I think the main problem is the use of position:absolute for .col-left. position:absolute causes that element to be outside of the flow of the rest of the page. The height of it has no effect on the resulting height of its parent (as if it were not inside the parent).
You have a lot of height values set to 100%, it took me going all the way to the page div class before I was able to increase the vertical real estate of your content.
I recommend evaluating whether you should be using that particular height property in so many elements, you may be constraining yourself with no reason.
Looking at the page source, the height of the element is not specified via CSS. If you would like the sidebar to grow, you would need to specify a height and/or min/max-height properties.
This seems like it should be the easiest thing in the world, but I'm having difficulties. I'm started to think I didn't know as much about CSS as I thought, or CSS was designed more poorly than I thought.
I have a page. At the top, there's an arbitrary amount of markup. Then there's a block element. All I want to do is make this block element extend its height to the bottom of the window.
See http://jsfiddle.net/vHVeC/4/. It's close, but the last block element extends beyond the visible area of the browser, creating scrollbars. No content should extend beyond the dimensions of the viewport (ie there should be no scrollbars).
How can I do this with having to use JavaScript?
Apparently, CSS has massive troubles finding heights. Widths, no worries.
Using Javascript, you'd go:
//Grab div element
var obj = document.getElementById('theDiv');
//Enable sizing
obj.style.position = 'relative';
//Force to window
obj.style.height = document.documentElement.clientHeight+'px';
Incidentally, in your Fiddle, the plaintext node above the div is offsetting the div below. It's finding 100% of the body height, but then being bumped down, causing the scrollbar. The way to fix this in CSS is position:absolute;left:0;top:0 which locks it in place.
Also note that in any of these cases, if you do end up scrolling (e.g. to 150%), you'll see the bottom edge of your div down there at 100%.
You've hit the css box model problem. A quick and dirty solution is to set the overflow: hidden property to prevent the scrollbars but you should be very careful doing this. You will need to make sure your content fits on screen as any content extending beyond the block element will be inaccessible to users.
This is how you can do it using a table (It's pure CSS):
http://vidasp.net/tinydemos/table-layout.html