A question about CSS.
I am working on some dated code. This code has its own css rules which are linked to some 'css manager'... now I want to use jQuery UI with its nice and cute dialogues etc.
Now my question is:
I have a css rule say...
#menu-bar{something}
jQuery UI is using rules like:
.ui-dialog-titlebar{something2}
Can I (without modifying jQueryUI stylesheets) do something akin to :
.ui-dialog-titlebar = #menu-bar?
So .ui-dialog-titlebar will be overwritten with {something} from #menu-bar?
Thanks in advance.
PS. Let me add that I can not simply do
.ui-dialog-titlebar {something}
becasue {something} is changing depending on the 'style manager' used.
I don't think a css rule can inherit from another one, definitely not CSS 2 or CSS 3. What you can do is to add multiple css classes to the elements. In your case, you could simply add the ID to the dialog element:
<div id="menu-bar" title="dialog">...</div>
or add it programmically:
$('.dialog').dialog(...).attr('id', 'menu-bar');
Note though, #menu-bar should really be a class rather than an ID, if you want multiple elements to have the style.
Related
I was trying to add some css styling to my wordpress website. However, I'm quite confused how to select the element and add the css !
Let me explain it in detals in three scenarios:
Picture 1:
I'm going to change the color and width of that button with text "Submit your attendance" inside. I wanted to make it red.
First Try: Picture 2:
I selected the calss which is :
wpcf7-form-control wpcf7-submit
Added the background-color: red , but it didn't work.
Second Try: Picture 3:
I did the same for this class:
wpcf7-form-control
Thrd Try: Pictur 4:
In inline style, when I add background-color: red and width: 100% in workes. I noticed a style attribute is also added. However, I'm not sure how to add in my Custom CSS of wordpress. I mean which element should I select? Of course Inline-style is not an element.
This is not an issue with regard to WordPress. This is due to CSS Specificity. What this means is that the rule that is more specific will "win" and be applied. This is why inline styles typically work over non-inline styles.
In your example, the rule that is being applied is more specific than the one you're trying to override with.
There is a hierarchy when it comes to specificity and the order in which rules are applied. Here they are in order of most specific to less:
Inline Styles
Ids - targeting the ID of an element is more specific than targeting a class
Classes, attributes and pseudo-classes (for example :hover)
Elements (for example a "p" tag) and pseudo-elements (:before)
Either add an ID for the your button or target the class in a more specific manner. For example body .thecontainer .thediv .anothercontainer .myelement
This might be work. You need to add !important property.
wpcf7-form-control{ background-color:red !important; }
Try this.
To update worpress css you have to edit the file style.css
Appearance -> Editor -> style.css (search inside other files)
or
Appearance -> Customize -> Additional CSS (where you have to add manually every line of code)
Sometimes you need to add "!important;" at the end of line, something like:
background-color: red!important;
Is there a way or operator in CSS to assign a new style to specific element? I don't want to change original style because it belongs to a plugin and changing it will change it on all my pages. However I want to change the position of the element on a specific web page.
I also can't call those styles in my html because that CSS file is used solely in jquery plugin, you only put class="slideshow" in html div and thats that. I can change that CSS file to suit my preferences, however I don't know how to change it for specific instances?
In order to make a specific styling on a specific instance of your plugin, you should assign a specific class or id to a parent container of that plugin for the instance you need customization.
Example : you can give the id="special" to a parent of the plugin in the page you want customization.
Then you can use that selector to style it independently from other instances of that same plugin.
example CSS:
#special .slideshow /*other selectors */ {
/*your specific style */
}
In your scenario CSS specificity Rule will be helpful for you.
For example in your plugin you are using RED Font Color in class slideshow. Then in your another CSS file you can create a more specific Rule.
Check the Demo what I've posted above on comments section. Here is the direct link.
div.slider .slideshow {color:green;}
You can refer to the element by name:
#htmlitemname{
color: green;
}
CSS is cascading, i.e. it will apply it top down - general, class and then the id.
You can add !important to your css if you wish it to override any inline styles. So long as you make a style sheet specifically for that page, this should work for what you need. Hope this helps :)
I just started to port twitter's bootstrap to GWT (see the github project here and a very ugly demo here), but, I was having a log of issues with bootstrap styles vs Gwt styles.
Bootstrap put a border-top in tr/td elements, and GWT components basically use tables everywhere. In the demo you can see that bug in the left VerticalPanel.
So, I was looking for a way to make GWT components ignore bootstrap styles, and I have no idea how to do this.
Is there a simple way to make it work right?
Thanks in advance.
It's possible, but somewhat complex to do something with a Linker in GWT. The high-level idea would be:
Put all your GWT components in a <div id="gwt">...</div>
Add a linker to the GWT Module file that will process CSS files.
In the linker, transform the GWT CSS (e.g., standard.css) to insert a #gwt before each selector rule.
The first part is easy, just add an id to your root element.
The second part is also easy, simply add code that looks like this to your Module.gwt.xml file:
<define-linker name="cssLinker" class="com.you.bootstrap.linker.CssRenamingLinker" />
<add-linker name="cssLinker"/>
The hard part is implementing the Linker. It's possible to do parse it by hand, but you might find it easier to use something like SAC.
Using the Linker, you can transform your CSS by inserting a #gwt before each selector. Using SAC, you might do that by overriding all the DocumentHandler methods to simply emit each of their arguments to an OutputStream. In DocumentHandler.startSelector() you would first emit "#gwt " before each selector.
[Edit]
This assumes that GWT's standard.css defines styles that override the bootstrap styles. If not, you might have to 'enhance' the GWT CSS with defaults. There's a list of W3C recommended defaults here.
The benefit is that this is future-resistant - if GWT styles change or if bootstrap styles change, this should be robust.
Hope that helps,
Adam
You can simply add a style to one of your root GWT objects and then simply override the bootstrap styles to remove those messy borders:
<div class="gwt">
... some other GWT-content
</div>
and in your CSS:
.gwt tr, .gwt td {
border-top: 0px;
}
Of course if you need to embed some bootstrap elements in your GWT elements then you will have to hack around and do:
<div class="gwt">
... some other GWT-content
<div class="bootstrap">...
... Bootstrap elements
</div>
</div>
and in your CSS:
.bootstrap tr, .bootstrap td {
border-top: 1px; // Whatever bootstrap style puts
}
I am building a jQuery UI site. I can see how easy it is to add widgets or dialogs and also I have seen it is possible to style elements using the theming api:
http://jqueryui.com/docs/Theming/API
So how do I style things like normal text or html headers 1-3 or html tables?
I would like to use the classes and styles from jQuery UI so everything fits together and changes when I change the theme.
I have tried to apply ui-widget-content or ui-widget-header to divs or h1,h2, but maybe there is a better way, or an in depth tutorial somewhere.
I usually detect the class of the theme I want to customize, and then instead of changing directly in the jquery css, (because I prefer to have udner control my changes, and ebcuase if I update the theme, don't need to add the changes again) , I add these modified classes in an "override" block or how you want to name it, so that are same classes, but with an important;! or other hierarchy trick added. For instance, calling the parent ID to give it more weight: #content .ui-widget-content {whatever} , or .ui-widget-content {whatever property:whatever value !important;}
Is usually some small bits, never a large portion of things that I want to customize, so adding these 2 or 3 classes in my main.css does not hurt. It depends, though.
edit: Oh... with "oder" you meant "order". Sorry, was not understanding well your question (is a bit unclear).
If you are not supporting IE7, you might be interested in using:
tr:nth-child(even) {background: #fff}
tr:nth-child(odd) {background: #000}
I am using the jQuery UI library out of the box, based on a theme.
Having links rendered as buttons is great, however I need to override some buttons with different colours.
How do I specify an specific class for a particular button to use?
I recommend looking at the CSS for the jQuery UI buttons and duplicating the structure of the CSS which specifies the buttons, but with your own class instead of the jQuery UI classes. Make the overrides that you need in this CSS and include it after the jQuery UI CSS. CSS uses a combination of the most specific selector and ordering to determine which values to apply. By doing this you will make sure that you have the same specificity for each of the CSS selectors used by jQuery so that your CSS takes precedence based on order.
Smashing Magazine has an article that probably has more information than you care to know about the specificity issue.
You can also:
Use Developer Tools in the browser (Chrome has great ones).
See what class from jQuery UI defines the button color.
Override it in your CSS file with the "!important" attribute.
For example, when I needed to override jQuery UI spinner control and remove the borders, I found the class that defines the borders using Chrome Dev Tools. Then in CSS: I added something like that:
.<jquery-ui-class-that-i-found> { border: 0px !important; }
Works great!
I would say, give the particular button or buttons an id, and:
$("#buttonId").removeClass().addClass("myClass");
If you want to apply it to multiple buttons each with its own id:
$("#buttonId, #anotherButton").removeClass().addClass("myClass");
I think the button API should include a configuration like this where you can change color etc. by passing parameters
$("button").button({background:"FFFFFF",hover:"FFFFF"});
this is just an idea where you can change some of its visual attributes.
I found this worked for me:
$(".btnSave").removeClass("ui-state-default").addClass("SaveButtonStyling");
Basically needed to remove the ui-state-default class and then add my own for the background colour etc.
Thsi meant that the rounded corner class etc stayed put and I was able to amend the background colour etc.
If you simply wish to have some additional/different for particular buttons, simply give the buttons some classes like class="mybuttonclass otherbuttonclass" - multiple classes are allowed. Then, just add css rules for your class(es)
.mybuttonclass
{
background-color: red;
}
.otherbuttonclass
{
color:white;
}
thus the background is red with white text - or whatever combination you wish, which would override items in the cascade (CSS) above it. (assumption is that your .CSS file is linked in AFTER the jquery UI css file, or is in-line on the page, both of which would override the jQuery UI css.