Styling in React JS

Inline Styling

Inline styles are nothing new,they are a HTML feature that we've all most likely used at some point. However,implementing inline styles in React is
slightly different,we store the values as objects.

Inline object definition

<div style={{backgroundColor: "green" }}> IRSHAD ALI </div>

Object literal definition

const divStyle = {backgroundColor: "green" }
<div sstyle={divStyle}> IRSHAD ALI </div>

Whilst inline style are often used when applying conditional style, they are often not the best choice when more than one element requires the same
styling.

CSS & CSS Pre-processors

Whilst the process of using vanilla CSS or a CSS pre-processor is the same in React, there are a couple of notable differences. When applying
classes to elements, we use the 'className' syntax rather then 'class'. We also link our stylesheet using the @import syntax.

For CSS

import React from 'react'
import './App.css'

const App = () => {
  return <Dogs/>
  }
export default App;

CSS Modules

CSS Modules are simply .css file in which all CSS style and animation are defined. With an exception all of the style declared are locally
scoped to the Component they are imported into.

.dogSounds{
font-size: 1.5rem;
color: green;
text-decoration: underline;
}

All CSS style for one component are declared in one file.

import React from 'react'
import style form "./dog.css";

const Dog = () => {
  return <h1 style={style.dogSounds}> woof</h1>
}

export default Dog;

CSS-in-JS Libraries

CSS-in-JS and inline style are extremely similar. However with inline styles React attaches the style to the DOM nodes,where as CSS-IN-JS libraries
take your styles and inject them into a <style> tag in the DOM.

npm install --save styled-components

Can also b declared in another file and impored in

import styled from 'styled-components

const Title = styled,h1`
  font-size: 1.5em;
  color: green;
  text-align: center;
  `;

  **//IN COMPONENT**

  <Title>
    Heloo World!
  </Title>

Thank's To @TheTraveling.Dev