Let's say I have links looking like buttons all over my app. They are orange, unless they are "disabled" (having no href):
a.button {
background-color: orange;
}
a.button:not([href]) {
background-color: grey;
}
Now, I'm not sure how to allow certain buttons look different in their context, but keep the disabled ones as they were. Let's say I need the "buttons" inside my <footer> to be green, or - as usual - grey if disabled:
footer a.button {
background-color: green;
}
The problem is that this rule has higher priority, as it's more specific. How can I allow disabled buttons in the footer to still be grey without repeating my code? I know I can use !important, but please assume that my real-life example is more complex and I want to avoid using it.
Use CSS variables. You define the default value and you simply set the variable to define a new one.
a.button {
background-color: var(--main, orange);
}
a.button:not([href]) {
background-color: var(--disable, grey);
}
footer#foo a.button { /*I am adding an ID to make it really more specific*/
--main: green;
}
<a class="button">a link</a>
a link
<footer id="foo">
<a class="button">a link</a>
a link
</footer>
Check out http://qnimate.com/dive-into-css-specificity/ to see a full list of CSS specificity.
Assuming you have more than one a.button in your footer, we'll skip using a plain id selector. You could pair an id and attribute selector, using the title attribute to identify all disabled "buttons":
index.html
<a class="button">a link</a>
a link
<footer id="foo">
<a class="button" title="disabled">a link</a>
a link
</footer>
and styles.css
#foo a[title="disabled"] {
color: green;
}
Related
How do I make the first line of ::after in bold?
I'm making a CSS snippet for Obsidian. I want to make a Dropdown for tags that start with '#-'. How do I make the first line bold?
I can't change HTML code:
<p>
<a href="#-Dropdown" class="tag" target="_blank" rel="noopener">
#-Dropdown
</a>
</p>
Those CSS blocks don't even appear in the devtools:
a.tag[href^='#-']::after::content {
font-size: 20px;
}
a.tag[href^='#-']::after::first-line {
color: red;
}
A jsfiddle if you're willing to try yourself
Essentially what I am trying to do is have one element react as the hover state of a different element.
.page-template-page-services-new .imgBlock:hover { .page-template-page-services-new .ButtonService {color: #6395ce; background-color: #fff; } }
Not currently working - is this a thing? If not, how might I accomplish it. I know the selectors are correct, they work independently.
What I think you are referring to is that you've seen something akin to
.selector-one{
//style definitions
.selector-two{
//other style definitions
}
}
This comes from pre-processors such as SCSS (Sass) or LESS, I'll assume you can do a quick google on those.
For the other part of your question, yes, you can style an element differently if it's parent container or even a sibling is hovered.
Example
.container-hover:hover .red-on-hover{
background-color:red;
}
.sibling-hover:hover + .sibling-hover{
background-color:blue;
}
<div class="container-hover">
<h3>Other Text</h3>
<div class="red-on-hover">Background will turn red on hover</div>
</div>
<p class="sibling-hover"> When I am hovered, my sibling will be blue</p>
<p class="sibling-hover"> Blue? Blue</p>
For the sibling hover, please note that if you added more .sibling-hover elements that all but the first one would be able to turn blue if you hovered over it's immediately prior sibling.
It can work if they have a parent child relationship.
.page-template-page-services-new {
background: #ccc;
}
.page-template-page-services-new .imgBlock:hover .ButtonService {
color: #6395ce;
background-color: #fff;
}
<div class="page-template-page-services-new">
<div class="imgBlock">
<img src="http://placehold.it/100/100" alt="">
<div class="ButtonService">
<p>
This is a test
</p>
</div>
</div>
</div>
I am using single CSS file for all my pages, but I come across with this problem. I have an almost identical (with minor differences) element on two different pages ( let's say home page and about page; This is my CSS codes for a specific element in the Home page, I want to use this for another page with minor differences. How do I name those two classes,
Do I need to use completely separate class names like .home.topcontainer { and .about.topcontainer { etc, or is there any robust way handling this issue?
What is the best way of naming CSS blocks for different pages, if I am using a single CSS file for my whole website to avoid me get confused over class names?
Thanks
CSS
.top_container {
position:relative;
top:3px;
height:144px;
z-index:1;
background-color: #143952;
width: 90%;
left:5%;
right:5%;
font-family: 'Scope One', serif;
overflow:hidden;
min-width:900px;
The best practice is to add some relevant class in body tag (as you can see in several CMS like magento etc.) and then use like this:
<body class="home">
<div class="top_container">
<!-- Do something -->
</div>
</body>
--or--
<body class="about">
<div class="top_container">
<!-- Do something -->
</div>
</body>
now you can use css like:
.home .top_container{}
.about .top_container{}
Let's assume this is your Home page
<div id="home">
<div class="top_container">
//stuff
</div>
</div>
And this is your about page:
<div id="about">
<div class="top_container top_container_about">
//stuff
</div>
</div>
Now, in your CSS file, add the style for the 'top_container' class like so:
.top_container {
//css styles common to the top_container element
}
And then write the style that's unique to the top_container in the about section:
.top_container_about {
//css style unique to the about section
}
This is one way which takes advantage of the 'Cascading' property of a 'Cascading Style Sheet'.
Commonly used practice here is to use a base class and a variation to that base class. That way we use the base css-class for both elements and change it a little by overwriting some values with the variant-class. You didn't specify how you want the top containter to change but here is an example:
.top_container {
background: #000;
color: #fff;
width: 200px;
height: 50px;
padding: 10px;
}
.top_container.top_container--narrow {
width: 100px;
}
<div class="top_container">
Default
</div>
<div class="top_container top_container--narrow">
Narrow
</div>
I add the page name to the body class, and make changes like that using CSS like
.style {
margin: 0;
}
.home .style {
margin: 10px;
}
From what I learned in coding scss, it is better to make your class name a general one. In css only you can make it like this:
CSS
.top-container{
width: 100%;
}
.top-container.about{
width:60%
}
.top-container.contact{
width:30%
}
HTML
home.html
<div class="top-container"></div>
about.html
<div class="top-container about"></div>
contact.html
<div class="top-container contact"></div>
The about class will override whatever style you have in top-container. So its easy to use, short and quite simple. You can use this in making your class name a more general one.
If there are same elements on both pages such as Header then you can use the same class name for them on both pages so that they will look exactly identical on both pages. And for making some changes to those elements you can use different CSS selectors. In the below given code, I have used class and id as selectors.
I HOPE THIS ANSWER MEETS YOUR REQUIRMENTS.
Homepage: header background color is blue.
<header class="top_container" id="home_header">
<!--YOUR WEBSITE HEADER-->
<h1>TITLE</h1>
</header>
<div>
<!--YOUR SITE CONTENT-->
</div>
About page: header background color is red
<header class="top_container" id="about_header">
<!--YOUR WEBSITE HEADER-->
<h1>TITLE</h1>
</header>
<div>
<!--YOUR SITE CONTENT-->
</div>
CSS file:
.top_container{
background-color: blue;
color: white;
}
#about_header{
background-color: red;
}
I would do like so. Cause you might have a .top-container on every page you need to set like a "default" style for .top-container. So CSS Cascading Style Sheet. Cascade from top and if an element needs to be a little different just set the differences in a more specific defined class. Something like so:
.top-container {
/* apply all styles for .top-container */
}
.home.top-container {
/* this .top-container will have all styles from .top-container defined above */
/* so only define all DIFFERENT things for .home.top-container here */
}
.about.top-container {
/* define all DIFFERENT things for .about.top-container here */
/* like before it will always have the .top-container styles */
}
I have a Home component with this inside:
<alert type="info">Hello from ng2-bootstrap</alert>
Inside my home.style.scss, I have this:
:host .alert {
background-color: green;
}
which should change the background color to green, but it does not.
The above css code will produce this style:
[_nghost-wjn-3] .alert[_ngcontent-wjn-3] {
background-color: green;
}
and the final HTML looks like this:
<home _nghost-wjn-3="">
<div _ngcontent-wjn-3="" class="card-container">
<alert _ngcontent-wjn-3="" type="info" ng-reflect-type="info">
<div class="alert alert-info" role="alert" ng-reflect-initial-classes="alert" ng-reflect-ng-class="alert-info">
Hello from ng2-bootstrap Sat Sep 17 2016
</div>
</alert>
</div>
</home>
I don't know what the problem is here, but I think the selector is wrong. I'd like the final selector to be:
[_nghost-wjn-3] .alert
instead of:
[_nghost-wjn-3] .alert[_ngcontent-wjn-3]
Or in other words, why is there no _ngcontent-wjn-3 attribute on <div class="alert">...</div>?
Maybe I'm doing the whole thing wrong. What I'm trying to achieve is to customize the CSS of the individual bootstrap components (<alert> in the code above) as provided by the ng2-bootrap library (https://github.com/valor-software/ng2-bootstrap) inside my custom components (<home> in the code above).
I'm using the default view encapsulation (emulated) in the home component.
How can I do that please?
I figured it out myself. This is what I was looking for:
:host /deep/ .alert {
background-color: green;
}
The above code will produce the following:
[_nghost-wjn-3] .alert {
background-color: green;
}
This way I can modify the default styles of a bootstrap class (.alert, in this case) inside of my component <home>.
Source: https://angular.io/docs/ts/latest/guide/component-styles.html
You need:
[_nghost-wjn-3] alert[_ngcontent-wjn-3]
Instead of:
[_nghost-wjn-3] .alert[_ngcontent-wjn-3]
If you go and check your structure, alert tag has the ngcontent... attribute, not his div child with alert class.
I have twelve <a href> links that lead to different categories. As a means of orientation for the user I would like to emphasise the very category (<a href>-button) that the user is in right now.
How can I achieve this in CSS? I read about selected and active, but I haven't been able to make it work yet.
This is one of the links/buttons:
<span class="category_item"></span><span class="category_description">Handy & Co.</span>
The corresponding CSS:
.category_item {
display:inline-block;
background:url(../img/category_item/ph.png) no-repeat;
width: 45px;
height: 45px;
margin-right: 11px;
margin-bottom: 20px;
}
.category_item:hover {
background:url(../img/category_item/hover.png);
}
.category_description {
position: absolute;
font-size: 11px;
color: #000;
margin-top: 43px;
margin-left: -62px;
z-index: 1;
opacity: 0;
}
Thank you in advance!
You can run some jquery code when you load the page that checks the link urls with the current page's url and setting a class on the links that match.
JSFiddle: http://jsfiddle.net/og4o1tdh/2/
something like this:
HTML:
<div id="categories">
<span class="category_description">Google</span>
<!-- jsfiddle code is apparently run on fiddle.jshell.net -->
<span class="category_description">JSFiddle</span>
</div>
JS:
$('#categories a').each(function (){
var link = $(this).attr('href');
if (window.location.href.indexOf(link) > -1) {
$(this).find('span').addClass('currentCategory');
}
});
CSS:
.currentCategory {
color: orange;
font-weight: bold;
}
To give a special class to an anchor when a user clicks you can use simple javascript and jQuery.
Give all the anchor's you want to be in the scope of this a class for instance:
HTML:
<a class="nav-link" href="http://www.google.com"> Google </a>
<a class="nav-link" href="http://www.yahoo.com"> Yahoo </a>
Javascript:
$(".nav-link").on("click", function() {
$(this).addClass("active");
});
To make sure you only have one anchor with "active" class I would do the following:
$(".nav-link").on("click", function() {
$(".nav-link").removeClass("active");
$(this).addClass("active")
});
There is no built-in way of knowing which link is the current one. The easiest way may be to use javascript to check the current URL by document.URL and add a CSS class to the link with an equal href attribute. Then, you may style this class in CSS.
CSS doesn't know what page you are on.
To do this you will have to change your HTML markup, for example: to add:
<a class="current-page" href="index.php?category=handy&location=&sort=" ...
on the relevant link which you can use to 'hook' an new CSS style onto:
.current-page { color: red; }
The alternative is to use Javascript to 'read' the URL and apply a style.
You could...
Simply add a unique classname to the body tag or (some element that wraps around the anchor tags). And then style your links accordingly. This option is quite easy if you have access to change the HTML in your pages:
HTML
<body class="category_handy">
...
<a href="..." class="category_handy">
<span class="category_item"></span>
<span class="category_description">Handy & Co.</span>
</a>
....
</body>
CSS
body.category_handy a.category_handy {
color:red;
}
body.category_dandy a.category_dandy {
color:yellow;
}
body.category_something a.category_something {
color: blue;
}
If you don't have access to directly edit each page, you may have to dynamically check the URL, and then add a classname (like "current") to the anchor tag who's href attribute matches.
Either way, the solution will not involve "css only".