I'd like to import an external CSS (eg. Bootstrap) into my site-- the problem is I'd like to apply the Bootstrap styles only to a specific region of the page. When I include Bootstrap, it applies its styles to the entire page, restyling all tables, divs, etc.
Is it possible to only apply Bootstrap to a region (say a parent div or something?)
Thanks
The only way to do this is to have a separate iframe for the content you want to style with Bootstrap (unless you want to edit the Bootstrap CSS, and add your outer div's selector to the beginning of EVERY rule).
HTML5 introduced the new scoped attribute, which is made specifically for your use case, but has not yet been implemented by any one of the major browsers.
If you are using jQuery (which you probably are, since all of Bootstrap's Javascript functionality is dependent upon jQuery), you might wanna try Simon Madine's jQuery Scoped CSS plugin.
Import Bootstrap before your own styles. That way your own styles will overwrite the changes made by Bootstrap where applicable.
I've only tried this locally and not given it any thorough testing but it seems to work fine. I created a div around the content and assigned it an id. Then prefixed all of the bootstrap selectors with the id I assigned the surrounding div. The prefixing was done with a couple of search and replace operations. Perhaps it can be done easier with less
Forgot to mention that the body selector of the bootstrap.css has to be replaced with the id and not prefixed like the other selectors.
Related
I have changed my css sheet for my entire site and it works great. The change has to do with the background color of rows in tables. Although it does what I want, there is one view that I would like to be exempt from this alteration. Is there a way to exclude this view from the change or create a new css sheet for this specific view?
Well, I would come up with a CSS styling strategy. The goal should be to minimize CSS and overrides. Also, having an extra CSS file for just one page will cause an extra HTTP round trip to get the resource. My recommendation is to stick extra CSS classes on this view. Then, override precisely the styles that you need in your global CSS styles.
I figured out the solution which ended up being much easier than I expected. Since I am very new to using CSS and HTML I was unaware of the style tag. However, that is what I was looking for. For anybody looking at this in the future, just use:
<style>
(CSS that you would like to override)
</style>
I know I can just have a custom stylesheet that overrides the bootstrap component I wish to customize (for example the jumbotron), but is the right way to go about this "problem"? I don't think this can be done with a bootstrap theme, although I haven't read a whole lot on this subject.
You can use your browsers DevTools to inspect an element that you want to change, and in the Rules/Styles section you can see which CSS elements is it using and then you can create your own css file and paste the CSS there and change it so it overrides bootstraps element. Here is how to get the devtools from Chrome https://developer.chrome.com/devtools#dom-and-styles and from Firefox https://developer.mozilla.org/en-US/docs/Tools/Page_Inspector/How_to/Open_the_Inspector. Don't forget to import your CSS customised script under bootstraps so it overrides the CSS that you wish to change.
Use twitter-bootstrap customize on their website to customize it and download the customized files. Or just create a custom CSS file and edit classes like .jumbotron and other stuff
There are a few ways to modify the default bootstrap css and no one way is inherently more or less "right" than any other. It all depends on the coding style of you and/or your team. Here is a list of a few ways that I came up with off the top of my head:
Modify the css file you downloaded from Bootstrap
(My Choice) Override Bootstrap styles with your own CSS. Just be sure to follow the rules of CSS Specificity (External < Internal < Inline) and if you have trouble getting a certain rule to apply try reading this answer or force it with !important
NOTE: This is likely NOT a comprehensive list, just a starting point.
I saved and am using the bootstrap css but it conflicts with my main css.
it has tags body, html, a, img, p... and my css loses configuration
how can I use the bootstrap css without colliding?
thank you
Try importing your custom CSS after Bootstrap CSS.
In CSS, the “!important” suffix was originally intended to provide a method of overriding author stylesheets. Users could define their own “user stylesheets” and could use this suffix to give their rules precedence over the author’s (website creator’s) styles.
Unfortunately, and quite predictably, its usage has spread massively, but not in the right direction. Nowadays, it’s used to counteract the pain of having to deal with CSS specificity, otherwise known as the set of rules which dictate that “div h1 a” is more specific selector than “div a”. Most people that use CSS on a daily basis don’t know enough about CSS specificity to solve their problems without using the “!important” suffix.
1.over ride those styles in your css file by using !important property. bootsrtap css either override or extend your css with bootstrap css so if you want to override entire css of some class best to use !important property.
2.if your are using script in your code so its very easy to differentiate the css styles.
Try combining into one CSS, multiple CSS slows down the sites.
Even, Bootstrap has its own body,html, etc tags. You have to edit them or delete/comment them. So it avoids conflicts.
Generally, the last CSS property will be applied, so if you put your body, html etc at the end of Bootstrap.css, that might work, but not recommended.
I built an extension which, whenever user visits some specific sites, I inject my script on the top of there web pages. I used
document.body.insertBefore(wrapperDiv, document.body.firstChild)
to do so.
Now problem: CSS of injected script gets messed up for each and every site(differ from one site to another).
How should I maintain single css structure for all sites?
You should be able to solve this problem by using unique IDs for your html tags with CSS.
That is, if your DIV CSS properties are interfering with their DIV CSS add a #uniqueNameHere ID to your DIV and set the CSS for the #ID.
This page on the use of the !important keyword may be useful too.
http://css-tricks.com/9462-when-using-important-is-the-right-choice/
Use unique selectors for your elements (be it classes with specific prefix or similarly constructed IDs), but you probably try to include CSS along with your script, which may not be a good idea.
In some cases the inline styling is the best idea - it will overwrite all the styles for your elements and will make sure the outlook of these elements is consistent across different pages.
So, I would say, go with inline styling.
For documentation on how the styles are overwritten in CSS 2.1, please see the following page: http://www.w3.org/TR/CSS21/cascade.html#specificity
I have made some templates on wikia.com, which contain only CSS code (key:value;).
My problem is having another template use these style templates in a style attribute tag.
style="{{MyTemplateStyle}}"
This code does not evaluate as expected. The CSS code is outputted before the element and the style attribute is not included inside the element.
Am I trying something not possible for a wiki ?
I merely want to be able to change styling on certain templates in one place, like regular HTML & CSS pages.
CSS styling specified from the style="" attribute always takes priority over any other css, even if you use !important in a CSS specification.
Therefore any edits you make to your CSS on Wikia will not ever override the CSS specified inside an attribute.
Kim, you were right to switch to classes instead of embedding in-line styles via templates.
The very idea of using templates suggest that this was going to be re-used in more than one place, applying styles to a group or, in fact, a class of elements.
This approach is much simpler to read and maintain (as you only have one, central place to edit), and also, if done right, will enable you to seamlessly change the colour scheme via Special:ThemeDesigner.