Exploring the distinctions in syntax for applying styles in CSS/SASS/SCSS/MUI, including the usage of `.myClass`, `& .myClass`, and `&myClass` along with considerations for

This specific code excerpt can be found at: https://mui.com/material-ui/react-slider/#music-player

<Slider
  aria-label="time-indicator"
  size="small"
  value={position}
  min={0}
  step={1}
  max={duration}
  onChange={(_, value) => setPosition(value as number)}
  sx={{
      color: theme.palette.mode === 'dark' ? '#fff' : 'rgba(0,0,0,0.87)',
      height: 4,
      '& .MuiSlider-thumb': {
          width: 8,
          height: 8,
          transition: '0.3s cubic-bezier(.47,1.64,.41,.8)',
          '&:before': {
              boxShadow: '0 2px 12px 0 rgba(0,0,0,0.4)',
          },
          '&:hover, &.Mui-focusVisible': {
              boxShadow: `0px 0px 0px 8px ${
                  theme.palette.mode === 'dark'
                    ? 'rgb(255 255 255 / 16%)'
                    : 'rgb(0 0 0 / 16%)'
                }`,
          },
          '&.Mui-active': {
              width: 20,
              height: 20,
          },
      },
      '& .MuiSlider-rail': {
          opacity: 0.28,
      },
  }}
/>

I am struggling to fully comprehend the syntax used in CSS/SASS/SCSS/MUI (In Backus-Naur form (https://en.wikipedia.org/wiki/Backus%E2%80%93Naur_form)):

<.> | <&.> | <& .>myClass: {value}

Also, I find the concept of nesting this syntax quite challenging:

<.> | <&.> | <& .>myClass: {<.> | <&.> | <& .>myNestedClass>: {value}}

csssassmaterial-uiscss-mixins

Answer №1

When working with SCSS, the "&" symbol serves as a shorthand for 'parent' within nested style rules.

If there is a space between the "&" and the next class, it indicates that the nested class is a child of the parent. If there is no space, it means the nested class belongs to the parent class itself.

.abc{ & .xyz { … } }

The above code will be compiled as .abc .xyz{…}, creating a descendant selector that targets elements with class "xyz" inside elements with class "abc".

.abc{&.xyz{…}}

This code will compile to .abc.xyz{…}, a class selector that matches elements with both classes "abc" and "xyz".

.abc{&:hover{…}}

Here, .abc:hover{...} represents a state pseudo-selector targeting elements with class "abc" when they are being hovered over.

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 there a way to adjust the color of the spin buttons in Material UI Text Field when using type number?

When creating a number Text Field with Material UI, I noticed that the colors of the spin buttons are not adhering to my theme. Here is an example code snippet from the Material UI documentation that showcases the issue: <TextField id="outlined- ...

javascriptreactjsmaterial-uithemestextfield

A collection of items displayed in an unordered format across two columns

I need help creating a list that displays in two columns. One column for odd numbers, the other for even numbers. Here's an example of what I'm trying to achieve: +----------------------------------------------------+ | col- ...

htmlcsstwitter-bootstrapcol

What could be causing the lack of functionality in my nested CSS transition?

My markup includes two classes, fade-item and fade. The fade class is nested within the fade-item class as shown below: <a class="product-item fade-item" (mousemove)="hoverOn(i)" (mouseleave)="hoverOff(i) > <div class= ...

htmlcsssass

What causes the input field to lose focus in React after typing a character?

Currently utilizing React Mui for components and encountering no errors in either the Chrome inspector or terminal. How can this be resolved? No error notifications are being displayed by eslint or Chrome Inspector. The form submission functions correctl ...

javascriptreactjsmaterial-ui

Is it possible for a CSS menu with border to slide off the screen?

https://i.sstatic.net/bBbkU.png How can I create a CSS menu with borders that do not overflow off the page when using margin:0; I am trying to add a border to my CSS links without them overflowing on top of the page. I have imported my custom.css file in ...

htmlcss

Avoiding clashes between CSS styles in web applications

As I work on developing a web application that can be embedded on external websites, one of the challenges I am facing involves constructing dialogues with their own unique stylesheets. This could potentially lead to conflicts if both my dialogue container ...

css

What is the best way to locate the final text node within the <p> element?

Looking at the code below, my goal is to identify and retrieve the text node that serves as the last child element. <p class="western" style="margin-bottom: 0.14in"> <font color="#000000"> <font face="Arial, serif"> <font ...

javascriptjqueryhtmlcss

Angular and Bootstrap do not support margin styles

While working with Angular 5 and Bootstrap, I have encountered an issue with using inline styles for margin. The template I am using is as follows: @Component({ selector: "dynamic-container-component", template: ` <div styl ...

cssangularbootstrap-4

Generate a div element that is positioned at the exact same location as the image

I have successfully created an interactive image slider. When a user clicks on an image, I am using JavaScript to dynamically generate and display a div with additional text content. However, I am facing an issue where the newly created div appears on the ...

jqueryhtmlcss

Animating the size of an element with dynamic content

I am working on a feature where clicking on a card should display a summary. When a new summary is shown, I want the summary container to animate and align its position with the associated card (top). However, despite my efforts, I am facing an issue whe ...

javascriptjqueryhtmlcss

Switching the background image with a single click and reverting it back with a double click using jquery

I am working on a project with multiple div elements which need their background images to change upon clicking and revert back to the original image when clicked again. Below is the CSS code for one of the divs, including its Class and ID: .tab_box { wid ...

jquerycssimageonclicktoggle

Implementing a horizontal scrollbar for an AJAX datatable

Is there a way to incorporate a horizontal scrollbar into an Ajax Datatable? I attempted to use "ScrollX" :true, however, this method did not prove successful. $(document).ready(function () { $('#myDataTable1').DataTable({ "aj ...

jquerycssajax

Displaying star ratings from a JSON file using pure JavaScript, no need for jQuery!

Currently, I am attempting to utilize JavaScript to extract data from my JSON file and display the hotel2show.rating as star ratings. The representation of stars will be based on the values provided in 'hotels.json' Below is the JavaScript code: ...

javascriptjsonajaxcss

Is it Class Design Sheet with double names?

<div id="SideBar" class="sidebar mainbar"> Recently, I came across this code snippet in a .aspx file. Is this code valid? Can anyone guide me on understanding its functionality? I assume it is valid, but I am unable to locate it in the CSS file. Whi ...

css

Image control failing to display SVG file

I am facing an issue with displaying an SVG file on the img control in angular10. When I try to use SVG, it's not showing up but it works fine when I change the file type to jpg for the same control. The img control is placed inside a nav bar. Here i ...

htmlcssangulartwitter-bootstrapsvg

Show the table header at all times, even when the rows are hidden from view

Whenever the number of rows in my dynamic table changes due to user events, all tr elements that do not have the class .selected are set to display:none;. This means that at times, none of the table rows have the class selected. The problem arises when I h ...

htmlcss

Error 401: Unauthorized access to CSS files in MVC

Initially, I am aware that this issue has been discussed here before, but none of the suggested solutions have worked for me. I have encountered a problem with adding my own CSS files to a new web project I created. The default code template provided by VS ...

cssasp.net-mvc

Don't forget the last click you made

Looking for a way to style a link differently after it has been clicked and the user navigates away from the page? Check out this code snippet I've been using: $(document).ready(function(){ var url = document.URL; function contains(search, find) { ...

javascriptjqueryhtmlcss

Ensuring Consistent HTML5 Page Layout Across Various Browsers Using CSS

Hey everyone, I recently created an HTML5 page and utilized the <section> tag. However, I'm encountering issues with the CSS file I'm using. It seems to work perfectly on Firefox, but the layout is all over the place when viewed on Chrome a ...

csshtml

When clicked, the DIV expands to fit the size of the window

Is there a way to use jQuery to expand a div to full screen when clicked, and change the content or layout of the div? I have a small div on my webpage with text or images inside, and I want it to enlarge when clicked so it fills the entire window with m ...

jqueryhtmljquery-uicss