Suppose I have some html like this -:
<div style="blah...blah">Hey Nice</div>
<a style="blah...blah">Great</a>
How do I remove all the inline styling applied to the above elements in my stylesheet considering I don't know what all inline styling exists.
Currently I am trying this, but in vain -:
div[style], a[style]{ !important }
You must reset all css properties for elements that have style attribute:
[style] {
position: static !important;
float: none !important;
border: 0 none !important;
margin: 0 !important;
padding: 0 !important;
outline: 0 none !important;
// and so on
}
There are several determining factors determining which CSS property prevails in any situation. In order, these are:
Whether the property value has the !important flag or not.
If the style declaration is applied inline via the style attribute.
The strength of the CSS rule selector
If the rule has any ID clauses, and if so how many
If the rule has class, attribute or pseudo-class clauses, and if so how many
If the rule has any tagname clauses, and if so how many
If the property is parsed later in the source than another property with a rule of the same strength
So the only way to override the properties is to make sure that all the properties applied via style are applied elsewhere in your stylesheet, and have the !important declaration. The most rational way to do this is still very awkward — it would involve applying a very specific reset stylesheet, and including !important on every property on every rule.
But even if this is done, you still couldn't override inline style declarations that have !important themselves.
You've told Mojtaba that there should be a better solution, but that better solution would involve designing CSS to break its own rules. Imagine if there was a simpler solution for overriding inline styles from stylesheets designed into the language of CSS — should there also be another solution for simply overriding the override from inline styles? Where does the cycle end? All in all, I'd recommend using Javascript or giving up. Or describing your specific problem in more detail — there may be another solution!
If you're not happy with using !important overwrites in the CSS (as suggested by others on here), the only way would be to use JavaScript to remove the styles.
This is really easy in jQuery (better if you're able to assign a class name to the elements to select it with):
$('.selector').attr('style', '');
This will simply replace the element's 'style' attribute with nothing, thus removing the inline styles.
This isn't ideal though since it will rely on the visitor having JavaScript enabled, and may well result in the visitor seeing a style 'flash' as the page loads: the styles assigned in-line to the element before the JS kicks in and removes it.
Related
I have the following style on my html element:
html {
font-size: 16px;
font-family: "Harmonia Sans Regular" !important;
}
But even with !important, my font styling is still being overriden in things like inputs.
Why? I thought inherited styles trumped user agent styling?
Nope. If you want your styles to have precedence, they need to apply to the same element. Which, in our case, is input.
You have applied styles to the html element, not to input.
Now, if you changed your selector to html *, to html input, to input or to *, it would be a different story... The two selectors would get compared and yours would have precedence.
The only difference between your selectors and the ones in the default browser stylesheet is yours are loading later, hence, provided you have the same specificity, yours apply. So the minimum selector for yours to apply would be input {}.
But the important bit here is: html {} only styles inheritable input properties which are not defined (not set) at element level. If they are set inheritance does not happen (there's no need to inherit, because the property resolves). The input set value applies, regardless of values and specificity on any of the parents. In fact, if what you're expecting would happen, designing web would be a lot more difficult and a lot less flexible (IMHO).
Which is a reaaaaaly long way of saying: change
html {/* globals here*/}
into:
* {/* globals here */}
... and they'll probably work as intended. But be warned: it will apply to all elements, and you will soon understand why the way inheritance works is, in fact, quite smart (and helpful).
I am using a stylesheet in my code to stylize proprietary widgets, therefore I don't have access to alter the base stylesheet (nor is that really good practice anyway). One of the styles is causing problems in my application and I determined that the margin: 0 property needs to be removed entirely from this CSS rule:
.esriBasemapGallerySelectedNode .esriBasemapGalleryThumbnail {
border: 2px solid #F99;
margin: 0;
}
Is there a way to do this? Since I cannot view the stylesheet in a formatted way, I cannot get the index of this rule. The styles aren't in-line so I don't think I can use the .css() method. If I can't remove it, the only alternative I can think of is setting it to 1px (which I tested and it removed the problem that's occurring) but I'm not a big fan of that solution.
You will need to expand the specificity of your element if you do not wish to override css rules. The easiest way to do this is to add an id on an element and then write a css rule for that element using the id instead of the classes.
Read more here:
https://css-tricks.com/specifics-on-css-specificity/
If in my webpage, i have all the three css defined for a div
Inline
Internal
external
I know that browser first looks for 1)Inline then for 2)Internal and last, it looks for external css.
but i want to call only external css, how it would be done?? Can i do it through !important or there is any other way?
There is no difference between internal and external style sheets. Which styles are applied depends on:
Specificity
Declaration order
Inline styles are the most specific, then identity rules (#), then class rules (.), then element rules.
For two rules that have the same specificity, for example div .main and span.title, both rules apply, but the one declared last takes over when they specify the same properties.
The only way to circumvent the precedence is to use !important.
Best thing to do is to put everything into an external css file.
If you must have inline styling then make sure you only have ones that aren't already defined
in your external stylesheet. i.e Dont duplicate/override styling. e.g, if you have the following in your css file:
div { padding: 5px; }
then dont have the following inline styling.
<div style="padding-right:2px;" />
Just put it into the css file
div { padding: 5px 2px 5px 5px; }
Like you said, you can use !important if you have to override a styling for just one page that doesn't apply to the other pages in your site.
1)Inline then for 2)Internal and last, it looks for external css.
No. There is no difference in priority between CSS included with <style> and CSS included with <link>.
but i want to call only external css, how it would be done??
You cannot cause CSS included via <style> or CSS included via the style attribute to be ignored.
Can i do it through !important or there is any other way?
You could apply !important to every rule and then hope that no rule included via <style> or style also has !important… but that way lies madness.
I'm building an html5/js/css application that will exist inside of a div on my client's existing html. I want to be sure that none of the client's CSS styles are inherited by my app.
Is there a best practice to reset this div and its descendant elements?
I'm thinking I'll use something like:
#my-id * { //styles }
I'm wondering if there is a better/best-practice approach? Thanks.
That will be very difficult/likely impossible to ensure. The type of solutions that Starx is referring to assume no preset styles other than the browser defaults, and "reset" in that context refers to harmonizing the inconsistencies across various browser defaults.
But in your case, your client CSS may already contain highly specific selectors such as
#someDiv .aClass a{float:left;}
... and applying those "CSS reset" solutions simply will not override this.
You can see that Truth's selectors also have lower specificity than this, and therefore will fail to ovetride the client's styles in such cases.
Your question is very similar: How to remove all inherited and computed styles from an element?
So the short answer is: there is no way to ensure this because you cannot "remove all inherited and computed styles from an element" ... update: ...unless you can anticipate and override every preexisting style declaration with new declarations having appropriate specificity.
If you want to only recent this specific div, than what you have is fine. You forgot to reset the div itself though:
#my-id, #my-id * { /* styles */ }
You are probably looking for Eric's CSS Reset as it one of robust resets out there.
But the reset rule is applied to the whole page, instead of the just the box. SO, modify the rules, by keeping #my-id infront.
What does !important mean in CSS?
Is it available in CSS 2? CSS 3?
Where is it supported? All modern browsers?
It means, essentially, what it says; that 'this is important, ignore subsequent rules, and any usual specificity issues, apply this rule!'
In normal use a rule defined in an external stylesheet is overruled by a style defined in the head of the document, which, in turn, is overruled by an in-line style within the element itself (assuming equal specificity of the selectors). Defining a rule with the !important 'attribute' (?) discards the normal concerns as regards the 'later' rule overriding the 'earlier' ones.
Also, ordinarily, a more specific rule will override a less-specific rule. So:
a {
/* css */
}
Is normally overruled by:
body div #elementID ul li a {
/* css */
}
As the latter selector is more specific (and it doesn't, normally, matter where the more-specific selector is found (in the head or the external stylesheet) it will still override the less-specific selector (in-line style attributes will always override the 'more-', or the 'less-', specific selector as it's always more specific.
If, however, you add !important to the less-specific selector's CSS declaration, it will have priority.
Using !important has its purposes (though I struggle to think of them), but it's much like using a nuclear explosion to stop the foxes killing your chickens; yes, the foxes will be killed, but so will the chickens. And the neighbourhood.
It also makes debugging your CSS a nightmare (from personal, empirical, experience).
The !important rule is a way to make your CSS cascade but also have
the rules you feel are most crucial always be applied. A rule that has
the !important property will always be applied no matter where that
rule appears in the CSS document.
So, if you have the following:
.class {
color: red !important;
}
.outerClass .class {
color: blue;
}
the rule with the important will be the one applied (not counting specificity)
I believe !important appeared in CSS1 so every browser supports it (IE4 to IE6 with a partial implementation, IE7+ full)
Also, it's something that you don't want to use pretty often, because if you're working with other people you can override other properties.
!important is a part of CSS1.
Browsers supporting it: IE5.5+, Firefox 1+, Safari 3+, Chrome 1+.
It means, something like:
Use me, if there is nothing important else around!
Cant say it better.
It is used to influence sorting in the CSS cascade when sorting by origin is done.
It has nothing to do with specificity like stated here in other answers.
Here is the priority from lowest to highest:
browser styles
user style sheet declarations (without !important)
author style sheet declarations (without !important)
!important author style sheets
!important user style sheets
After that specificity takes place for the rules still having a finger in the pie.
References:
http://www.w3.org/TR/CSS2/cascade.html#cascade
https://russmaxdesign.github.io/maxdesign-slides/02-css/207-css-cascade.html
It changes the rules for override priority of css cascades. See the CSS2 spec.