如何制作响应式菜单

Question

当页面正在调整菜单大小并且内容比图像减少得更快并且页面宽度大于图片时左侧对齐

在 PC 网站上正常调整大小是正常图像没有，但是当它在移动或 PC 上的移动模式时它坏了

我试过了

background-size: 100% auto;
background-size: cover;

没有任何效果，所以请帮助我，我需要它，谢谢

/* font-family: 'Montserrat', sans-serif; */

body {
    background: #000;
    font-family: 'Lato', sans-serif;
}

header {
    width: 100%;
    background: #fff;
}

nav > * {
    list-style: none;
}

nav {
    max-width: 960px;
    margin: 0 auto;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    padding: 10px;
}

ul {
    padding: 0;
}

nav > ul {
    display: flex;
    flex-direction: row;
}

.logo {
    background: url('../img/01.png') no-repeat;
    width: 150px;
    height: 50px;
}

.menu {
    display: flex;
    text-decoration: none;
    margin: 0 10px 0 10px;

    color: #3a3b3b;
}

.menu:hover {
    color: #d96e5d;
    transition: all 0.5s ease;
}

strong.menu {
    font-weight: normal;
    color: #d96e5d;
}

.top-bg {
    background: url('../img/topbg.jpg') no-repeat;
    background-size: cover;
}

.top-img > h1 {
    font-family: 'Montserrat', sans-serif;
    text-transform: uppercase;
    color: white;
}

.content {
    position: absolute;
    top: 800px;
    color: white;
    font-size: 80px;
}

@media ( max-width:500px ) {
    nav > ul {
        flex-direction: column;
        align-items: center;
    }

    nav {
        flex-direction: column;
        align-items: center;
    }


    .item{
        padding: 10px;
        width: 90vw;
        background: #d3d0d0;
        margin: 2px 0 2px 0;
    }

    .menu {
        justify-content: center;
    }    
}

<header>
		<nav>
			<a class="logo" href="#"></a>

				<ul>
					<li class="item"><a href="aktivity.php" class="menu">Aktivity</a></li><li class="item"><strong class="menu">Index</strong></li><li class="item"><a href="kontakt.php" class="menu">Kontakt</a></li><li class="item"><a href="onas.php" class="menu">Onas</a></li>					
				</ul>

		</nav>
	</header>
	<main>	
	<section class="topimg">
		<h1>Coupe Invest</h1>
		<img src="assets/img/topbg.jpg" alt="background">
	</section>

	<section class="content">
		<p>Lorem, ipsum dolor sit amet consectetur adipisicing elit. Dolorem a et laboriosam illum recusandae nesciunt veniam architecto saepe ratione! Eaque quas provident voluptates facere consectetur repellendus amet nulla ea nisi! Lorem ipsum dolor, sit amet consectetur adipisicing elit. Consectetur odio, quos suscipit laudantium quo doloribus nulla sit ut cupiditate mollitia nihil maiores. Vitae ipsum excepturi quibusdam nam molestias ullam! Enim. Lorem ipsum dolor, sit amet consectetur adipisicing elit. Cumque, ut amet laboriosam quaerat, expedita nam neque placeat molestias non hic sit voluptate quam quia beatae nulla rem est eius fugiat. Lorem ipsum dolor sit amet consectetur adipisicing elit. Excepturi fugiat, cumque distinctio consequuntur asperiores quia veniam suscipit tenetur, nobis adipisci ad voluptate quisquam ducimus nesciunt id, voluptatem odio neque molestias. Lorem ipsum dolor sit amet, consectetur adipisicing elit. Accusamus aliquid eum adipisci quaerat ducimus pariatur natus velit voluptates! Odit amet tempora quisquam mollitia fugit aliquam neque vitae molestiae debitis aperiam?</p>
	</section>

	</main>

Answer 1

@media (max-width: 500px)
.item {
    width: auto;
}
nav > ul {
    flex-direction: unset;
}
}

@media (max-width: 380px)
.menu {
    margin: 0 5px 0 6px;
    font-size: 13px;
}
}