Changing an image through CSS - html

I want to replace the main "hero" background I have on one of my pages. Since I am using Wordpress, I am forced to use custom CSS (I cannot edit HTML).
I have tried targeting the div where the current photo is contained using class selectors as shown below:
.header .custom-mobile-image {
background-image: url(https://thenovelcolumn.com/wp-content/uploads/2019/04/The-10X-Rule-Image-2-e1555476700855.jpg);
}
Here is the HTML code i am trying to target:
<div class="header custom-mobile-image" style="background-image: url("https://thenovelcolumn.com/wp-content/uploads/2019/04/education-books.jpg"); background-color: rgb(106, 115, 218); padding-top: 74.5938px;">
The link to the page itself: http://thenovelcolumn.com/the-10x-rule
The target photo is the first one on the page with three opened books in the center.
I expected my CSS code to change this photo to whatever the link specifies it to, but the photo remains unchanged.

Your selector should be .header.custom-mobile-image (i.e no space between the two classes - they both are assigned to the same element, the space would mean a parent / child relation)
And you should add !important in that rule to override the more specific style attribute.

That's because styles from "style" attribute have bigger specificity than any styles you might add with classes and even id's: https://developer.mozilla.org/en-US/docs/Web/CSS/Specificity
So in this case only way is to use !important:
.header.custom-mobile-image {
background-image: url(https://thenovelcolumn.com/wp-content/uploads/2019/04/The-10X-Rule-Image-2-e1555476700855.jpg) !important;
}

here we go:
.header.custom-mobile-image {
background-image: url("https://thenovelcolumn.com/wp-content/uploads/2019/04/The-10X-
Rule-Image-2-e1555476700855.jpg") !important;
}

Writing inline css (style="some:css;") is not the best idea. It will allways neglect styles from your .css file.
As someone already mentioned it's about specificity.
Weakest are type selectors (html tags and pseudo elements), then goes classes, then id's
if you have inline css, it will apply styles over .css file. Only thing stronger than inline css is using !important

Related

Apply different CSS style to :after element on another page?

I have a navigation, where I use:
.header-link:after { .... background-color: red; .....}
I have this in my global scss stylesheet, affecting all pages.
On one specific page I need this :after element to be different color. When I use the same code and put it in the page specific css style sheet:
.header-link:after { .... background-color: white; .....}
It naturally rewrites the original one and all pages become this new color. As the page specific CSS stylesheet is imported after the global css stylesheet.
How do I apply this new background color, so that only the specific page is affected and it's not rewriting the original one on other pages?
Why don't you use an ID on the page that goes against your rules ?
Normal Css
.header-link:after { .... background-color: red; .....}
Specific Page, but with an id="pageHeaderWhite" on ou per example, and then create the custom rule.
#pageHeaderWhite .header-link:after { .... background-color: white; .....}
Your CSS specificity triggers because a rule with an ID is stronger than a rule with only class: selector.
Hope it works!
apply different classes
use another way of targeting this element - by ID

Can't identify CSS or element controlling background color

I'm having trouble changing the background color of a certain button on a WordPress plugin.
The button and text are set to white and I'm trying to identify the CSS file that controls it, unfortunately I've had no luck within the inspect element of my browser.
It is incorporated in a popup form - so multiple other files come into play.
I changed the color within the browser during inspect but need a fix.
You can overwrite CSS attributes by setting !important after your definition or by defining the scope better (e.g. by writing body or html before the class selector).
make sure your css file is able to "access" the dom element – if the element is in an iframe the css wont work.
body .wpforms-page-button {
background-color: green !important;
}
Using !important is generally considered hacky. Both rules in your screenshot have the same CSS specificity in that they are both firing on input[type="submit"] and .button.
Without seeing the corresponding HTML I can't give you the exact syntax, but something like
.parentclassname input[type='submit'] and or .parentclassname .button should make your style more specific than the original rule and therefore give it precedence.
Did you try to set !important after the #fff; ?
like this:
input[type=submit] {
background-color: #fff!important;
}
the best way is to define the button in a class, so you can change only the color for this specific button. Otherwise it will changes all the buttons to color #fff if you put the css in a general style.

Custom background color flexbox

I want to set background color on flexbox and tried as follow.
Class definition on app:
<App id="app" class="weight-protocol"></App>
on FlexBox:
<FlexBox
height="20%"
width="100%"
alignItems="Start"
class="calendar-header-bg"
justifyContent="Center">
in the css file:
.weight-protocol .calendar-header-bg {
background-color: #007DB2;
}
The custom background color is not going to apply at all as you can see:
Look at the code inspector, the custom css class stays at the beginning calendar-header-bg instead at last.
Did you try without .weight-protocol ?
.calendar-header-bg {
background-color: #007DB2;
}
If not work you can use !important tag:
.calendar-header-bg {
background-color: #007DB2 !important;
}
You can also try use only background tag instead background-color:
.calendar-header-bg {
background: #007DB2 !important;
}
I hope this helps...
Good Luck!
Shouldn't FlexBox have some css to do what you are trying to achieve? use inspector and watch for the div that cointains the flexbox.
Can you be more specific?
I'm guessing the problem is specificity also known as importance of selectors. This means that the selector you're using (class nested in class) has little weight overall, and it very likely overwritten by a different, heavier selector from within the library you're using. For instance the library might be targeting a class within a class within an id or something similar.
My advice is to see the applied styles within the dev tools, see what's overwriting your styles and then decide if you'll make your selector stronger( by making it more specific) or just add !important after your background-color declaration.

!imporant equivalent for HTML class tag?

I'm dealing with a real hash of a site, so this is why I'm asking about this absurd question.
I've looked everywhere to find some sort of way to make a class override another class in the HTML class tag to no avail.
I can either do this, try to untie a ton of spaghetti (which I probably won't be allowed to do anyways), or something anyone else can recommend (would be greatly appreciated).
Is this possible?
class="myClass !important"
If not, is there some sort of equivalent?
Please help! Many thanks in advance!
No, that's not possible. You're going to have to iron out the CSS Specificity by yourself I'm afraid.
If you have the ability to change the HTML templates, you can always go in and add a <div id="override"> or something like that to the outer most wrapper of the page to use as the "master" rule in your CSS classes. Then, in the CSS, you can just add that ID before any of the existing classes or ones that you need to modify.
For instance, if you have the following and want to override the .some-class:
<div class="some-class">Bleh.</div>
And the corresponding CSS:
.some-class { color: red; }
You can wrap the whole thing with:
<div id="override">
<div class="some-class">Bleh.</div>
</div>
And add the #override (or whatever you want to name it) before the .some-class and this rule will take precedence over the other:
#override .some-class { color: green; } /* This will override the red color form the other rule */
.some-class { color: red; }
You can't use !important for entire selectors. You need to find the specific rules you want to override, and use !important on each.
You can add more than one class to a selector as follows:
class="myClass myClass2"
Above is what the class attribute would look like on your HTML element.
As far as the CSS goes, define the classes as follows:
.myClass {
color: black;
font-size: 14px;
}
The above is just a sample of some properties you may have.
Defining "myClass2" after "myClass" in your stylesheet will allow the properties from "myClass2" to overrided the matching ones in "myClass":
//This goes below myClass
.myClass2 {
font-size: 16px;
}
As long as "myClass2" is after "myClass", your font will take the size property of '16px;' The value of "myClass" will be overwritten by that of "myClass2". If "myClass2" comes before "myClass", you can use !important to ensure that style is taken over the one defined later:
//This goes above myClass
.myClass2 {
font-size: 16px !important;
}
Hope this helps.
CSS classes are just a group of styles so you can use class instead of inline style tag.
The !important keyword helps you to override a specific style and not working on classes.
So, for example:
Lets say that we have a css rule on every div somewhere in our CSS file
div{border:solid 1px #ff0000;}
And later on we have this rule:
div{background:#000000;}
Every div in our page will be with border and a background if we want to override the div css rules we need to do something like this:
div{background:none !important;border:none !important;/*...ADD YOUR CSS...*/}
you can create a css reset class to reset all the settings that you want and than add your css

Replace HTML IMG with CSS IMG?

I'm reworking a site but only have permission to change the CSS. Most of the elements I need to change are properly tagged as id's or classes, but a few places have ids or classes listed inside an img tag.
I want to replace that image in the img tag using only css. Is there a way to do this? ie, hide the src img and have only my css referenced image visible?
sorry for such a late post, (almost a year, i know..), but i had the same exact problem Dreamling,
Some of the html used on our site is called up externally, so editing the html was not an option for me either. Here's how i solved the problem... Using only CSS.
Use Firebug if you have it.
Now look for the image you'd like to replace in the HTML. (firebug will show the id's and classes of the elements)
Your HTML should look something like this for it to work. (with an img src element inside a span element)
<span class="Dreamlings_ClassA Dreamlings_ClassB">
<img src="http://www.dreamlingsSite.com/dreamlingspic.png" alt="Dreamling's Pic">
<span>[This is just an extra span!] </span>
</span>
Now for the CSS :)
Call up the first element by class in the css. (use the last class name to be more specific in with editing [if you have multiple span elements with same first class name])
<span class="Dreamlings_ClassB">
should look something like this..
span.Dreamlings_ClassB {
background-image: url('../dreamlingsnewpic.png') !important;
}
and to hide that pesky image in the img src element..
span.Dreamlings_ClassA img {
display: none !important;
}
And thats it! :)
p.s. I was using the !important tags in my css to overwrite other external stylesheets..
but you don't have to use the tags if yours css will work without them. (you just have to be more specific in the css with id's and classes)
Hope this helped!
-tony
If your image tag is inside a container, anything that's a block, then use this:
<style>
#container {
background: url('image.png') no-repeat;
text-indent: -9999;
}
</style>
<div id="container">
<img src="image.png" alt="image to be replaced" />
</div>
As others said, it's really not good practice, but it works. Only tested in Chrome.
I want to replace that image in the img tag using only css.
Not that I know of, no. An image's src attribute can't be altered from CSS.
I also can't think of a workaround to do this, not even a terribly kludgy one. You can of course assign a background-image to the image element, but the actual image will always be in front of it,
You would have to have the original HTML altered in a way so the original button is a <button> element with a background-image property - that you can override using CSS.
Restricting access to the HTML but allowing access to edit CSS is odd practice. Both elements go hand in hand to produce the page.
Anyway, you could try removing or changing the name of "btn_next.png" so that it doesnt display when called from "src" and make the CSS the following:
#btn_next {
background: url('image.png') no-repeat;
display:block;
width:150px; /* for example */
height:30px; /* for example */
}
If that doesnt work, the only other way would be to hide the input button and replace the li row with a background image but then the button will cease to work. Unless you have access to an already included javascript file, then you can look at other solutions.