To apply style in JSX we need to pass a javaScript object like bellow

 

Example

import React from "react";

export default function App() {
  return (
    <div
      style={{
        width: "80%",
        margin: "auto",
        background: "gray",
        textAlign: "center",
        color: "white",
        padding: "20px",
        fontSize: "25px",
        fontWeight:"800"
      }}
    >
    Apply Style in React JS
    </div>
  );
}