I have a ‘page a’ using ‘css a’. This page has margins set in css.
I also have a ‘page b’ using ‘css b’. This page also has margins set in css, of the same size as in ‘css a’ (10px).
Is there any way I can make it so that when I am viewing ‘page a’ on its own it has margins, but when viewed in an iframe on ‘page b’ the margins don’t apply to ‘page a’. I know that’s kind of a long way of asking but the basic problem is that I am getting ‘double margins’ for the content in the iframe: the margin from ‘page a’ and then the margin from ‘page b’!
I guess one way of doing it would be to set the iframe not to be affected by ‘page a’s’ margins. Is there some way I can set ‘css a’ to exclude the iframe from the margins, that way only the margins from css b would apply and the page would still be in alignment. is that possible?
Thanks for any help
Matt
You can use Javascript to change the margins if the page is inside an iframe.
I don't know a way of specifying it from within a.css, but if you add the following to b.css:
iframe { margin:-10px; }
...it may work.
EDIT: Is the iframe with a.html the only item contained within b.html?
Do you have test files?
EDIT(2): In css, you would specify it as
iframe#head { ...; }
Also, I think you can comment on responses to your own questions. I could with mine.
Im really sorry i know everyone gets very upset with posting answers rather than comments im new to stack overflow and just learning. Have mercy! I have figured out what i was doing wrong and now i have this 'open id' thing i will try to post in the right place. I'm afraid this time though i have to post as an answer as i started this question without my open id and so still cant comment on that stuff....
OK now thats out of the way here is a 'test case' : http://cart3.jaspers-sensations.com/test/pagea.html
Page b is : http://cart3.jaspers-sensations.com/test/pageb.html
css a is : http://cart3.jaspers-sensations.com/test/stylea.css
css b is : http://cart3.jaspers-sensations.com/test/styleb.css
Having read your clarification, I don't think you can do that purely with CSS. I'm pretty sure CSS can't go across frames.
You should be able to do this using JavaScript, though, provided both documents are on the same domain.
For example, this should work on your example page. Add the following attribute to the <iframe>:
onload="window.frames[0].document.body.style.margin = 0"
That works in Firefox 3 and Opera 9, at least. But it's decidedly old-school JavaScript, and considering my browsers were being a bit fickle in which variants worked, I'm not sure how easy that would be to apply to the real site.
People more well-versed in JavaScript than me should be able to help out there.
This might help some more:
Accessing the document inside an iframe
Related
At first, it looks simple, and at the end of scroll event, a margin (or padding) will be applied at the top.
This is useful when there is a sticky element at the top. Then when a link is clicked and scroll down to somewhere on the page, it's nice to have this element "skipped" by the scrolling.
This article explains it pretty well: https://css-tricks.com/fixed-headers-and-jump-links-the-solution-is-scroll-margin-top/
I could make it work on really simple examples, and that works. However, I am trying to make this work on a normal website, and I can't. I think there is something not clear for me (or in general?) about how it works.
Please have a look here: https://meowapps.com/media-cleaner/tutorial/#Media_Library_Scan
When a link is clicked on the right, it scrolls but the scroll-padding-top is completely ignored. I have tried many techniques, moving the CSS property in many different places in the code, but that doesn't do anything.
Do you see what's wrong? Ideally, it would be great to find real the cause and maybe have an explanation why it doesn't work in this case and describes what's that case actually is.
Thanks a lot :)
scroll-margin is not useful if scroll behavior is controlled by JS
Looking at your page source, I found easy-table-of-contents WordPress plugin, which relies on smooth-scroll jQuery script. Also, I don't see scroll-behavior: smooth; in your body either (see this MDN page for reference).
It looks to me that your anchor link is not controlled by CSS but by JavaScript. And, as you'd know, when something is controlled by JavaScript, any relevant style declaration via CSS might be ignored.
What to do?
I honestly don't know. Perhaps you could replace the table of contents plugin with something that gives you a finer control. Perhaps you could refactor the said plugin yourself. In any case, should you need to keep the jQuery dependence and a particular WP plugin, you might have a tough luck for this fix.
I got your point, sorry for a long answer but I am sure this will clear your doubt with the output.
scroll-margin-top and scroll-padding-top define the amount of space to be given from within the element or from outside the element whenever a scroll event occurs.
Sometimes we see some text gets cut from the viewport such that it's half visible.
To avoid that kind of thing scroll-margin-top is helpful.
when no scroll event happens:
when scroll event happens but with scroll-padding-top:20px;
see an example from MDN Web Docs
Now applying this logic to your link example
When we click on the link it takes us to the specified div,
But when the scroll-padding-top is applied the output looks like this it gets stuck to the top of the viewport, even if we specify a certain margin with CSS the output is the same because the padding is applied from within the element:
When we apply scroll-margin-top we get the desired output on the link click event or scroll event:
a{
font-size:30px;
text-transform:capitalize;
}
#down{
scroll-margin-top:30px;
background-color:royalblue;
height:100px;
width:50%;
}
<center>
down
<section style="height:1000px;"></section>
<div id="down"></div>
<section style="height:1000px;"></section>
</center>
See Output
Correct me if I am wrong anywhere.
I searched this site and google and found no way to simply add a plain simple scrollbar to my webpage. Is there no such way? I'm rendering a web page and there is no scrollbar. Can't understand why the default behavior is faulty. Default is you want a scrollbar for overflow but no, with CSS everything has to be tricks and workarounds.
Are you probably looking for a way to always have a scrollbar present, also if the page is short enough to not have one?
Then, yes there is a way. You might wanna do:
html {
overflow-y: scroll;
}
I understand why one would do so.
It prevents jumps when navigating between pages, which have enough content to show a scrollbar and pages which do not.
I'm trying to make a sample web page to get acquainted with HTML5, and I'd like to try replicating Facebook's page layout; that is, the header that spans the entire width of the screen, a small footer at the bottom, and a three-column main body, consisting of a list of links on the left, the main content in the middle, and an optional section on the right (for ads, frames, etc.). It's neat and displays well in multiple window sizes.
So far, I've tried to accomplish this with a <header>, <footer> and a <nav> and <section> block, respectively. There's a few anomalies with the page, however. The footer (which contains a simple text block with copyright info) appears at the top-right of the page below the header when the window is maximized. On the other hand, when there isn't enough space to display everything in the window, it places the main body text below the section. In other words, it keeps moving elements around to fit the window.
Could someone please tell me how I'd achieve the look I'm going for? I've tried playing around with a few CSS attributes I read about through Google, but I'm pretty sure I don't know what I'm doing, and could really use some guidance.
Thank you!
This isn't an HTML5 question as much as it is a basic understanding of HTML and CSS. If you're going to jump in to web dev you're going to need to understand basic CSS like floating etc. I would recommend some tutorials on YouTube or NetTuts. Just play around with a few divs, move them around the page, manipulate them with CSS and it will start to come together. Then making a three column layout with fixed header and footer will seem like a piece of cake.
Floating Divs w/ CSS
I find CSS to be super hard. It is quite difficult to make a page that looks good and works on lots of different platforms and browsers. You may find it easiest to use a css framework, such as Bootstrap.
Drop that into your website, and use it to make your layout. Use the dev tools for your browser (Firebug for firefox) to examine the styles that are being applied to the various elements. Modify the styles to suit your needs.
HTML5 doesn't really give you a page layout for free. The elements you mention (header, section,etc) are used to create semantic pages, rather than to specify how they should be displayed.
Can't help much without your code. But I am sure it is because of float issue. add this CSS property to your footer clear: both
Hope it might help.
I'm not sure if you're trying to make yourself a little hack, or if you're looking for a complete library that will do all this for you, but if you're looking for the latter, I recommend Twitter Bootstrap, which is a cross-platform solution for implementing many HTML5 features, and even resorts to fallbacks for non-modern browsers. The only drawback is the requirement of jQuery in order to initialize the components that are responsive*. However, this is optional if you are not looking to implement these features. The responsive design, amazingly, does not require javascript since it is pure CSS. Hope this helps!
*Edit: meant "interactive" there, not "responsive."
I have an issue with Google Chrome: 19.0.1084.52 m when I have the Ask Toolbar installed
it breaks the website layout.
See print screen:
Is it usual behaviour that toolbars in Chrome would effect the website?
EDIT: I guess I should wrap everything inside a <div> and move the background-image from the <body> although is there a better option without adding this extra markup?
Website link
A Javascript snippet can disable ask toolbar in chrome. I hope this function spreads quickly!!
function removeAsk(){
if(document.getElementById("apn-null-toolbar") != null){
// mainMenu had a style change for its top positioning, returning it to normal
// perhaps a function can be made which iterates over every element ask has changed
document.getElementById("mainMenu").style.top = "-16px";
// Just remove the iframe and style elements
(elem=document.getElementById("apn-null-toolbar")).parentNode.removeChild(elem);
(elem=document.getElementById("apn-body-style")).parentNode.removeChild(elem);
}
}
Call this method after body onload
<body onload="removeAsk()">
There is no Chrome extensions API for creating a toolbar so mentioned extension must have created it via content script. What it means is that for each page you open, CSS and JavaScript files are injected by this extension to create a DOM element within the page acting as a toolbar. Problem with this solution is that using the content script it is possible to mess up website look or even the way it works.
I ran into this exact same issue with the Ask Toolbar. I basically took out my positioning attributes and top/left/right/bottom 's and replaced with margins. Margin uses less space and it comes out cleaner.
Although i do agree, it's kind of ridiculous to accommodate for a toolbar because the end-user could have anything installed that breaks and gives your layout bugs. Even Skype extensions will break a layout just changing the phone number.
So there's not much you can do, but use margins and keep CSS to a minimum. Just my 2 cents. and if you have to use CSS then stick with margins.
I have a Blogger template which is wider than the screen-width and causes the horizontal scrollbar to be displayed. I want to change it so that it fits and no scrollbar is shown. But the problem is I don't know what is causing this. I have downloaded the template file and in my code editor looked for all width properties and changed all 100%s to 90% and pix width values to value-100, but still the page is as before.
In finding the effective rule/rules in a such cases, what else should I look for/do? What is a comprehensive procedure to check things to find the rules?
Instead of changing the width, try adding the CSS property overflow: hidden to everything you think might be causing the issue and then remove them one-by-one until the scroll bar reappears and you'll have the culprit. You might need to add it to html and body as well. If the scrollbars aren't revealing any actual content, you can leave the overflow: hidden on the culprit to resolve the issue.
It might not be a width property that's causing the problem - there might be a block element inside your template that doesn't wrap or float that might be stretching out your container if the widths of the containers are defined using percentages.
Define the root container using a fixed width and this should eliminate many of those sorts of issues. Try that first and let us know if it works.
Procedure:
1). Understand the box model and how this varies on IE. It is just as likely that a problem "width" may actually be caused by padding, margin, or even border as width.
2). Check the rendering in other browsers. If you can reproduce the problem in FF get Firebug and use that to find out the calculated dimensions of the element in question, and tunnel down through it's children which may well be causing the issue. Chrome has a similar debugger to Firebug iirc, but I'm not familiar with it.
3). If that doesn't tell you what the problem is, start removing rules or whole patterns from your CSS until the problem goes away (or remove everything and add it back in piecemeal until the problem returns) - at that point you know what is causing the issue, if not why, and you can always update the question to ask us why when you've identified it.
hth
(Apols if any of this was already obvious)
Well, % always begins with "100". See the percentage of width of body tag is set to 100%. then according to it, just set other component % as per the requirement in your display.
Personally I do believe that, use of % is better then 'px'. If you know CSS, then try to change 'px' to % as per the requirement.
It seems that the component has min-width style and overflow property set to auto. You may want to set it to visible and do it in FireBug Firefox Page Inspector first, to see the effect alive before making post edit. If you just want to adjust the whole post width, blogger has standard interface. You can also edit the template manually