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import React, {useState} from 'react';
import './NavBar.css';

const NavBar = () => {
    const [isOpen, setIsOpen]  = useState(false);
    const toggleNavbar = () => {
        setIsOpen(!isOpen);
    };


  return (
    <nav className={`navbar ${isOpen ? 'open' : ''}`}>
        <div className='nav-container'>
            <h1>LOGO</h1>
            <div className='menu-icon' onClick={toggleNavbar}>
                <div className={`bar ${isOpen ? 'open' : ''}`}></div>
                <div className={`bar ${isOpen ? 'open' : ''}`}></div>
                <div className={`bar ${isOpen ? 'open' : ''}`}></div>
            </div>

            <ul className={`nav-links ${isOpen ? 'open' : ''}`}>
                <li>Home</li>
                <li>About</li>
                <li>Services</li>
                <li>Contact Us</li>
            </ul>
        </div>
    </nav>
  )
}

export default NavBar;

Css：

.navbar {
    background-color: #333;
    color: #fff;
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    transition: transform 0.3s ease-in-out;
    z-index: 1000;
}

.nav-container{
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.1rem 2rem;

}

.nav-links {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-links.open{
    display: block;
}

.nav-links li {
    margin-right: 20px;
}

h1 {
    font-size: 2rem;
}

.menu-icon {
    cursor: pointer;
    display: none;
    flex-direction: column;
    justify-content: space-between;
    height: 24px;
}

.bar {
    background-color: #fff;
    height: 3px;
    width: 25px;
    transition: transform 0.3s ease-in-out;
}

.open .bar:nth-child(1){
    transform: rotate(-45deg) translate(-5px, 6px);
}

.open .bar:nth-child(2){
    opacity: 0;
}

.open .bar:nth-child(3){
    transform: rotate(45deg) translate(-5px, -6px);
}

@media (max-width: 600px) {
    .menu-icon {
        display: flex;
    }

    .nav-links{
        display: none;
        flex-direction: column;
        position: absolute;
        background-color: #333;
        top: 100%;
        left: 0;
        width: 100%;
        padding-left: 20px;
        border-top: 2px solid #fff;
        padding-top: 14px;
    }

    .nav-links li {
        padding-bottom: 18px;
       
    }

    .nav-links .open {
        display: flex;
    }

}