Questions tagged [css]

Cascading Style Sheets (CSS) is a language for specifying the layout and presentation in general of markup such as HTML and XML.

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Should I use SCSS mixins as shortcuts for default CSS syntax?

This question is mainly about readability and understanding of the code. Im am also in the process of creating a SCSS framework like Compass and Bourbon. I struggle to write SCSS because I like to see ...
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Semantic Versioning for CSS

I maintain a CSS framework that is versioning with semantic versioning. What changes to a CSS framework are considered major, minor, and patches? Specifically, what is the "API" of a CSS ...
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Advantages and disadvantages of including JS/CSS inside the HTML?

What are the advantages and disadvantages of including JS/CSS inside the HTML instead of separated files? Specifically concerned about performance issues, for example, if the CSS and JS are small and ...
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-3 votes
1 answer
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Choosing between network optimisation and CPU usage in clientside web development [closed]

I'm working on a CSS library that includes hundreds of selectors and rules for quick templating instead of writing regular CSS. This is used as a replacement of attr() CSS function until it works for ...
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doesn't inline-styling represent separation of concerns concept the best way if you think that you're separating the HTML element from other elements?

I know that Inline CSS styling gets so much hate from many developers, and I understand that some of this hate is justified by the following facts: Inline styles increase page size as they don't get ...
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2 votes
0 answers
875 views

Setting width/height of unknown images for lazy loading

I have a site where users upload images & can all be viewed on a single page by other users. I want to lazy load images as the user scrolls instead of loading all initially. This is easy enough, ...
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-4 votes
1 answer
653 views

How do I set a darker background color on hover *without knowing the original color*?

I've tried everything related to filter and backdrop-filter, but nothing seems to work. I've searched online but not found a single article addressing this (which is odd). I simply want to set the ...
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-1 votes
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401 views

What are downsides to opening local html files in the browser?

Let's say you have a scenario where you want to build a simple web stack (html/css/js) prototype to share with someone. I am a little unclear on whether or not I want/need to use a small web-server to ...
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1 answer
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How would you architect a simple cascading style sheet object?

How would you architect a simple cascading stylesheet like inheritance object? For example, I have Apple that extends Fruit. class Fruit { constructor() { this.total = 10; } } ...
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6 votes
2 answers
451 views

Why don't web browsers know the physical dimensions of a display?

CSS is a syntax for specifying the appearance of text and other web content, sizes and lengths are defined in pixels, however pixels have different sizes in different devices, this is the most notable ...
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3 answers
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What are some of the best ways to create single page websites with dynamic content?

I'm expirementing with creating a website as a IT Ticketing system. This website has a top nav and a side nav. I want the content area to change depending on the link clicked. I've managed to get the ...
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1 vote
0 answers
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How to increase scalability the method that output each file while switching multiple many conditions?

I have a common style (common.scss) and a text direction (RTL, LTR) option file (option-document-direction-rtl.scss, option-document-direction-ltr.scss). And by switching the reading of these files, ...
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-1 votes
1 answer
151 views

Inline HTML elements don't allow setting "width" - why is that?

In HTML/CSS, inline elements, such as <span>, do not support explicitly setting their width via the width CSS property. This is confusing to many developers, as questions like "Setting the ...
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-4 votes
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675 views

Why isn't React recognizing the CSS file I've linked in Index.html?

I've built a meme generator using React as an early project to master the basics. I have 6 files in my "mememaker" folder on my desktop, which I created using "create-react-app". They include: index....
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496 views

Elegant way to prevent global CSS styles from being inherited by views (C#, ASP)

I've been working on a web app that's divided up into different web pages (around 20). It's only used within my company and it looks at financial data. It's a few years old and is in dire need of an ...
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3 answers
604 views

Repeating CSS class contents. Structuring css code

I'm a backend developer working on a webpage, building the CSS part. I like to write as less code as possible and reuse them throughout the site, a lot of pages. I want to be able to reuse some CSS ...
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3 votes
2 answers
132 views

Why create CSS classes named to match one specific style? (non-semantic class names)

There are a number of CSS frameworks that have a one-to-one correspondence between many of the classes and a single style. For example, in basscss ".inline-block" is defined as "display: inline-block;...
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798 views

Is JavaScript added and executed in parsing or in rendering?

As far as I know, each webpage is created in a two stage process, initiated by a webserver request and ended in a webserver response: Parsing: markup (Say HTML) is executed as is, or created by ...
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2 votes
1 answer
162 views

Best practices for positioning elements in an HTML-based game

It seems like HTML5 has about a zillion different layouts and methods for positioning divs, few of which seem to work exactly as described in most browsers. Imagine an implementation of, say, Tetris ...
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1 answer
100 views

Abstracting a CSS framework in an enterprise web application

Our team is attempting to "modernize" an old ASP.NET Web Forms application. One aspect we want to improve is its visual style as it looks very dated by today's standards. Additionally, its existing ...
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0 votes
1 answer
117 views

What are the points of apps like Sketch and Photoshop when it comes to Web Development?

This may be an obvious question but I really don't understand this so if someone can help me that'd be great. Basically, I am in the middle of developing an e-commerce app for my database management ...
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0 votes
1 answer
104 views

ReactJS - proper way to handle a responsive design approach?

I've always used CSS and media queries when it comes to responsive design. I've been developing in ReactJS for a while, but I feel my approach to responsive design is sloppy. I find myself using a mix ...
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1 vote
1 answer
862 views

How to white label my website in php

I have a website that follows the following structure: www.example.com/city1 www.example.com/city2 ... Programmatically we change the logo which is hard-coded in a specific config file for city 1, ...
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3 votes
2 answers
130 views

What are CSS modules? Are they a library, or a spec, or what?

So there are a fair few blog posts about that introduce CSS modules. For example: the official documentation: https://github.com/css-modules/css-modules a post from CSS Tricks: https://css-tricks....
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Is there a rule of thumb when it comes to the "name" attribute?

Since there is things like BEM in naming conventions for HTML class attributes, does the name attribute have anything of that sort?
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Can everything that CSS Grid or Flex Box do be done with older CSS properties?

Can you do everything that CSS Grid or Flex box does with properties such as display, float, margin, position, overflow, etc ? Edit: See my comment with @PeeyushKushwaha
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1 vote
3 answers
109 views

If either html+css or an image can achieve my desired decoration, which one should I prefer to use?

For example, to create flow indicator like: Step 1 > Step 2 > Step 3 I can either: 1.Use html+css .concave{ border-left:1em solid transparent; border-top:1em solid orange; border-bottom:...
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2 answers
183 views

CSS Methodologies for a Few Classes

We've been using BEM for several Drupal CMS projects quite successfully. This means we've been following a frontend-first approach where frontend developers specify the HTML, which is then implemented ...
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4 votes
1 answer
563 views

Is CSS inspired from C? [closed]

Maybe I'm not the first to ask this, but I've searched up and down the stack and I am yet to get an answer to my question. I have learnt CSS, and I also have a basic idea of the C programming language....
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-3 votes
1 answer
117 views

Is there a best practice for naming class selectors for identification alone

Is there a best practice for naming class selectors for identification alone? For example, for defining a single amount field with action button, we end up creating several div containers and div ...
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2k views

Do I need to put a license in my website's HTML and/or CSS?

I am making a website for a competition my school is taking part in, however I am not on the team and am not receiving any compensation (save for better references :P). The only condition I have set ...
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1 answer
178 views

Using CSS classes to express state

Is it good practice to express the state of an HTML element--such as whether an input's value is valid--using a CSS class? Would it be better practice to use data attributes, the properties of a ...
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-3 votes
1 answer
497 views

What does it mean by Don't use IDs in selectors? [duplicate]

I was just trying IDs on the CSS tab and I noticed that a little warning sign appeared "Don't use IDs in selectors" Why does the CSS tap recommend me not to use IDs in selectors?. Is there something ...
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1 vote
1 answer
108 views

Styling shareable React component?

I've been looking for a good way to style a react component just using css stylesheets. I would have used style-loader, because it's as easy as require('./style.css') and allows to save the final ...
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5 votes
0 answers
966 views

Best Practices For Writing Memory Efficient CSS [closed]

What are some best practices for writing memory-efficient (for the lowest peak memory usage) CSS? I realize this is a broad question, so I have broken it down into two main categories: What are 'do's ...
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2 votes
3 answers
558 views

Add extra HTML classes for frontend-tests?

Imagine a structure like this, a list with products. <div class="container"> <div class="teaser"> <img src="..."> <p>Product 1</p> </div> ...
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  • 535
13 votes
2 answers
13k views

How to namespace your CSS?

As far as I know there are two types of CSS namespacing: Prefix one: .myapp-alert {...} and class one: .myapp .alert {...} Which one is preferable? Does one has benefits over the other one? Are ...
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14 votes
4 answers
6k views

Why does Facebook obfuscate the names of CSS classes?

If you look at the source code of a website such as Facebook, you'll see many classes as such: <div class="_cy6 _2s24"><div class="_4kny"><div class="uiToggle _8-a _1kj2 _4d1i _-57 _5-...
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0 votes
1 answer
190 views

load more and Search Logic

Firstly i hope im in the right place to ask this question. I am building a web page that allows the user to select one image from a set of a 100+. i want to display them 6 at a time and the user ...
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1 vote
1 answer
202 views

Custom CSS Framework

Context: We're having a ton of super heated debates around the office. I'm just a neutral observer, as this is my first month at my current employer. Previously I haven't ventured outside of the ...
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1 vote
2 answers
159 views

Tabular Website Design with Continuously Added Content

I'm currently working on a site for a friend, converting a google sheet to a webpage (to reduce the time it takes to modify the spreadsheets and apply them to all users). One particular page is ...
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3 votes
0 answers
398 views

React DOM manipulation vs CSS for responsive breakpoints?

Specifically for ReactJS and responsive frameworks that show/hide elements based on width like Bootstrap. Because ReactJS has a virtual DOM I am presuming doing the DOM manipulation is faster and in ...
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4 votes
1 answer
96 views

Bootstrap classes in SCSS or HTML?

If I had a development workflow that supports SCSS and uses bootstrap. I can place bootstrap tags two ways... Inside the HTML: <div class="col-sm-3 offset-sm-9 col-xl-1 offset-xl-11"> Part of ...
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4 votes
3 answers
804 views

Best practices for front-end project with many views

We are a small front-end dev-team working with 18 months of experience and recently we got in touch with a first major project, ie. a medium complexity back-office web app, but with lots and lots of ...
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1 vote
1 answer
847 views

What are security risks of WYSIWYG HTML/CSS/JS editors running as web service?

I am currently implementing WYSIWYG editor that will be available on the web, what are the main security issues I should tackle? The editor currently works that when user is done typing, the text gets ...
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2 votes
1 answer
127 views

Why to design for mobile and scale to desktop with media query?

In the W3schools tutorial on CSS3 media queries they recommend to have the standard layout adapted to mobile viewing, and have a media query "scale it up" to desktop format when viewing on a desktop ...
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5 votes
1 answer
231 views

sass - use abstract selectors or mixins/placeholder?

This might have been covered in another thread. I didn't find it though.. Today, with Sass I have 2 options of styling my website. Lets see examples Example 1 <button class="button main center"&...
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16 votes
2 answers
815 views

Are ems still relevant?

My understanding from reading threads like this one is that the point of ems is to define all measurements in your webpage, by the base font size, which can be set by your browser. For example, in ...
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13 votes
2 answers
5k views

Should minified CSS be stored in Git?

I use Gulp to generate minified CSS from my SASS code for a project I'm working on. I wondered whether it's considered best practice to regenerate this minified CSS when pushing live from Git... or ...
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7 votes
1 answer
365 views

Why CSS3 Basic Box Model is "Dangerously outdated"?

These days I'm learning CSS by reading specifications, but I noticed W3C marked CSS Basic Box Model Level 3 as "Dangerously outdated" without any further explanation. So my question: What's the ...
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