Choosing multiple classes in CSS 3

As I reviewed some sample code today, I noticed the developer opted to use a "+" instead of a "," to select two classes.

.region + .region{
    border-left: 1px solid lightgray;
    padding-left: 3.5%;
    margin-left: 4%;
}

I'm curious about what the "+" sign does that the "," doesn't. What is the purpose of using it? Also, why was the same class selected twice in this code snippet?

For those interested, here is a link to the code pen... http://codepen.io/adobe/pen/vKixh

Since I am still learning CSS3, any insights or guidance on this matter would be greatly appreciated. Thank you.

classcssselector

Answer №1

They are Different!

+ serves as the adjacency selector, selecting elements such as .region that come after other .region elements.

By using a comma-separated list, you can apply a single block of styling to multiple classes, like so:

.region, .region{}

However, using this method would not add any additional actions beyond what .region{} would do on its own.

Adjacency selector Info (MDN source)

(+) This type of selector is known as an adjacent selector. It specifically targets the element that directly follows the previously targeted element.

Therefore, .region + .region{} would only style a .region that comes after another one, not one by itself or the first one.

Answer №2

Brothers and Sisters in CSS

<div>
    <div class="c"></div>
    <div class="x"></div>
    <div class="y"></div>
</div>

When you use .c + div {}, only the "x" element will be styled. Remember, CSS ONLY WORKS DOWNWARDS!

Using Multiple Classes in CSS

<div>
    <div class="c"></div>
    <div class="x"></div>
</div>

Using .c, .x {} will style both "c" and "x" in the same way.

More Specific Conditions in CSS

<div>
    <div class="c x"></div>
    <div class="c"></div>
    <div class="x"></div>
</div>

By using .c.x {}, you can style the element with both classes, "c x".

Answer №3

It's important to note that while + is a selector that works differently from the , (comma) in CSS. The + is actually an immediate sibling or adjacent selector, meaning it targets a .region element only when it follows another .region element directly.

For example, if you have multiple sibling .region elements like this:

<div class="region">...</div>
<div class="region">...</div>
<div class="region">...</div>
<div class="region">...</div>

Using the selector .region + .region will target all .region elements except the first one.

While this is a CSS2 selector, in CSS3 an equivalent selector would be .region:nth-child(n+1)

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Is it possible to modify the background color of a select option menu when hovering over it?

It turns out that the default background color of the select option menu changes to blue when it is hovered over. However, I would like to personalize and adjust it to my preference using Bootstrap 5 and CSS. Any assistance with this customization would ...

cssbootstrap-5

Tips for resizing user-uploaded images to fit the required dimensions outlined in the design draft using CSS or JavaScript

Hey everyone! I'm facing an issue but my English isn't great. I'll do my best to explain it thoroughly, and if anything is unclear, please feel free to let me know! So here's the problem: today there's a block for users to upload p ...

javascriptcss

A guide on dynamically accessing an image from the src directory using props in a Vite + React application

export default function Card(props) { return ( <card> <img className={cardCss.card__img} src={`../assets/imgs/card/${props.img}`} alt="" /> <div className={cardCss.card__stats}> ...

cssreactjsreact-propsdynamic-importvite-reactjs

Difficulty aligning two images in one div using HTML and CSS

Having trouble with HTML and CSS. I have a div containing 2 images - one for background and the other for an avatar image that I can't seem to center. I've tried using margin:0 auto; and display:block; but it's not working. Current HTML pag ...

htmlcssimagealignment

tips for positioning images and text in the center using css classes

Here's what I currently have: http://jsfiddle.net/nCs88/ Here's my goal: As a beginner, I am struggling to center the button images with the text. Any help would be greatly appreciated as this has been frustrating me for hours. ...

htmlcssimagetextblock

Tips for disabling scrolling on a <div> using another <div> as a lock

I am facing an issue with a page where a div is appended to the body of an HTML. The problem is that there are two scrolls appearing - one on the new overlaying div and another behind it. Here is an approximate structure of the page, how can I ensure that ...

javascriptjqueryhtmlcss

What steps can be taken to ensure that an empty array is returned instead of a null value

I encountered a 'null pointer exception' while attempting to return an array. It seems that the problem lies in my method returning an array with elements that are null. How can I correctly return an empty array? Here is the code snippet from th ...

arraysclassjava-7static-methods

Tips on arranging text around an image to prevent any overlapping

CLICK HERE FOR THE ISSUE This is the outcome. I prefer the text to be separate from the image. ...

htmlcssangularjsreactjs

How to use JQuery to retrieve multiple background image URLs from CSS styling

Initially, here is the CSS code that I am working with: background-image: url(/style_elements/img/first.png), url(/style_elements/img/second.png); I am trying to specifically target the second background image URL using jQuery: var item_img_url = item_i ...

jquerycssurlbackgroundbackground-image

Seeking assistance in creating custom tabs for integration with a jQuery tabs plugin

Attempting to navigate the world of CSS as a newbie, I find myself struggling with creating tabs. Our current tab setup can be viewed here, but unfortunately, these tabs are created using an unattractive <table> tag. Below is the code responsible fo ...

jquerycsstabs

Tips on adjusting the font size of headers in a Vuetify v-data-table?

I've been struggling to change the font size of the headers in my v-data-table. No matter what I try, the font doesn't seem to update. I even experimented with the Chrome developer tool and managed to make it work there. However, when I attempt t ...

cssvue.jsvuejs2vuetify.jsv-data-table

Styling the Sidebar with a Tucked-In Header Ribbon in CSS

There are numerous methods to achieve this desired effect: I initially used a table to achieve this, but I have now chosen against using tables for that purpose. What is the most effective way to accomplish this while maintaining a right border? ...

htmlcss

Steps for updating a text section beneath a carousel

I'm looking to enhance my webpage with a bootstrap carousel, which is pretty standard. However, I want the content under each slide to change dynamically, but I'm struggling to make it work. As a newbie, I could use some guidance. I've atte ...

javascriptjqueryhtmlcsstwitter-bootstrap

Tips for refreshing the default style of Material UI select

I'm having trouble customizing the default background color of the first menuItem in the select component. The class I need is not visible when inspecting the element, as the background color disappears upon inspection. Steps to reproduce: 1. Click ...

javascripthtmlcssreactjsmaterial-ui

Is there a way to develop a login form that retrieves information from a Google Sheet database?

Please help me with a solution. I have developed a registration form which effectively saves users' information in a Google Sheet. However, now I am yearning to create a login form that verifies the stored data and redirects the user to a different pa ...

javascripthtmlcssformsgoogle-apps-script

Manipulating CSS animations through JQuery

Currently, my animation is triggered by a :hover event. However, I would like to change it so that the animation starts when a button is clicked. Can someone guide me on how to manipulate the CSS using JQuery? //CSS .mouth{ top: 268px; left: 273px; ...

javascriptjquerycss

Navigate to the homepage section using a smooth jQuery animation

I am looking to implement a scrolling feature on the homepage section using jquery. The challenge is that I want the scrolling to work regardless of the page I am currently on. Here is the HTML code snippet: <ul> <li class="nav-item active"> ...

javascriptjqueryhtmlcss

What is the best way to implement this header style with code?

I came across this design from a potential client recently, even though we didn't end up working together. I thought it would be a good exercise to try coding the design for practice purposes. Just to clarify, this is not my original design and I have ...

htmlcss

Fade one element on top of another using Framer Motion

Looking to smoothly transition between fading out one div and fading in another using Framer Motion, but facing issues with immediate rendering causing objects to jump around. Example code snippet: const [short, setShort] = useState(false); return ( ...

javascriptcssreactjsanimationframer-motion

Display a Bootstrap input button group addon, where the first button has rounded corners only after the second button has been hidden

I am working on a button group and need to hide the second button dynamically. However, I am facing an issue where the first button has a 90° border. How can I adjust the code below to display button 1 with a rounded border? If I decide to hide "button ...

javascriptjqueryhtmlcssbootstrap-4