我正在尝试为我的网站制作一个切换菜单，但是当我打开菜单时，所有东西都向左跳转了一些像素。 我玩过一些设置，但都不起作用。 我对导航的原始CSS做了一些小改动，使按钮和ul对齐。 菜单应该直接向下打开列表，不影响按钮和菜单的位置。

有没有更好的方法来设置js函数或者可以在CSS中固定下来？ 我使用了WordPress starter主题下划线中的内置导航功能。

null

( function() {
	const siteNavigation = document.getElementById( 'site-navigation' );

	// Return early if the navigation don't exist.
	if ( ! siteNavigation ) {
		return;
	}

	const button = siteNavigation.getElementsByTagName( 'button' )[ 0 ];

	// Return early if the button don't exist.
	if ( 'undefined' === typeof button ) {
		return;
	}

	const menu = siteNavigation.getElementsByTagName( 'ul' )[ 0 ];

	// Hide menu toggle button if menu is empty and return early.
	if ( 'undefined' === typeof menu ) {
		button.style.display = 'none';
		return;
	}

	if ( ! menu.classList.contains( 'nav-menu' ) ) {
		menu.classList.add( 'nav-menu' );
	}

	// Toggle the .toggled class and the aria-expanded value each time the button is clicked.
	button.addEventListener( 'click', function() {
		siteNavigation.classList.toggle( 'toggled' );

		if ( button.getAttribute( 'aria-expanded' ) === 'true' ) {
			button.setAttribute( 'aria-expanded', 'false' );
		} else {
			button.setAttribute( 'aria-expanded', 'true' );
		}
	} );

	// Remove the .toggled class and set aria-expanded to false when the user clicks outside the navigation.
	document.addEventListener( 'click', function( event ) {
		const isClickInside = siteNavigation.contains( event.target );

		if ( ! isClickInside ) {
			siteNavigation.classList.remove( 'toggled' );
			button.setAttribute( 'aria-expanded', 'false' );
		}
	} );

	// Get all the link elements within the menu.
	const links = menu.getElementsByTagName( 'a' );

	// Get all the link elements with children within the menu.
	const linksWithChildren = menu.querySelectorAll( '.menu-item-has-children > a, .page_item_has_children > a' );

	// Toggle focus each time a menu link is focused or blurred.
	for ( const link of links ) {
		link.addEventListener( 'focus', toggleFocus, true );
		link.addEventListener( 'blur', toggleFocus, true );
	}

	// Toggle focus each time a menu link with children receive a touch event.
	for ( const link of linksWithChildren ) {
		link.addEventListener( 'touchstart', toggleFocus, false );
	}

	/**
	 * Sets or removes .focus class on an element.
	 */
	function toggleFocus() {
		if ( event.type === 'focus' || event.type === 'blur' ) {
			let self = this;
			// Move up through the ancestors of the current link until we hit .nav-menu.
			while ( ! self.classList.contains( 'nav-menu' ) ) {
				// On li elements toggle the class .focus.
				if ( 'li' === self.tagName.toLowerCase() ) {
					self.classList.toggle( 'focus' );
				}
				self = self.parentNode;
			}
		}

		if ( event.type === 'touchstart' ) {
			const menuItem = this.parentNode;
			event.preventDefault();
			for ( const link of menuItem.parentNode.children ) {
				if ( menuItem !== link ) {
					link.classList.remove( 'focus' );
				}
			}
			menuItem.classList.toggle( 'focus' );
		}
	}
}() );

.main-navigation {
	display: block;
	width: 100%;
	padding-right: 0;
}

.main-navigation ul {
	display: none;
	list-style: none;
	margin: 0;
	padding-left: 0;
	text-align: right;
}

.main-navigation ul li:hover > ul,
.main-navigation ul li.focus > ul {
	left: auto;
}

.main-navigation li {
	position: relative;
	top: 10px;
	left: -40px;
}

.main-navigation a {
	display: block;
	text-decoration: none;
}

/* Small menu. */
.menu-toggle,
.main-navigation.toggled ul {
	display: block;
}
.main-navigation.toggled{
	height: 170px;
}



/* CUSTOM HEADER STYLES */

.site-header {
	display: block;
	margin: 0 30px;
	padding: 50px 0;
}

.site-branding p {
	float: left;
	font-family: 'Merriweather Sans', sans-serif;
	font-size: 1.5em;
	margin: 0;
}
.site-branding p a {
	text-decoration: none;
}

/* Navigation */

nav.main-navigation {
	width: auto;
	float: right;

	<header id="masthead" class="site-header">
		
		<div class="site-branding">

			<?php
			the_custom_logo();
			if ( is_front_page() && is_home() ) :
				?>
				<h1 class="site-title"><a href="<?php echo esc_url( home_url( '/' ) ); ?>" rel="home"><?php bloginfo( 'name' ); ?></a></h1>
				<?php
			else :
				?>
				<p class="site-title"><a href="<?php echo esc_url( home_url( '/' ) ); ?>" rel="home"><?php bloginfo( 'name' ); ?></a></p>
				<?php
			endif; ?>
		</div><!-- .site-branding -->

		<nav id="site-navigation" class="main-navigation">
			<button class="menu-toggle" aria-controls="primary-menu" aria-expanded="false"><?php esc_html_e( '&#9776;', 'ab-portfolio' ); ?></button>
			<?php
			wp_nav_menu(
				array(
					'theme_location' => 'menu-1',
					'menu_id'        => 'primary-menu',
				)
			);
			?>
		</nav><!-- #site-navigation -->

	</header><!-- #masthead -->

null

关闭菜单打开菜单