汉堡菜单无法隐藏新增div内图片与文本的问题求助

问题描述 #

跟着YouTube教程做的汉堡菜单功能正常，但添加class为swiper的div后，打开汉堡菜单时该div内的图片始终显示，删除该div则能正常隐藏。需要添加CSS实现点击汉堡菜单时隐藏该div及其中的图片。

代码片段 #

HTML代码 #

<div class="menu-wrap">
    <input type="checkbox" class="toggler">
    <div class="hamburger"><div></div></div>
    <div class="menu">
        <div>
            <div>
                <ul>
                    <li><a href="index.html">Home</a></li>
                    <li><a href="spotify.html">Playlista</a></li>
                    <li><a href="hamster.html">Support</a></li>
                    <li><a href="#">Contact</a></li>
                </ul>
            </div>
        </div>
    </div>
</div>

<div class="showcase">
    <div class="showcase-inner">
        <h1>Welcome</h1>
          
        <p>Lorem, ipsum dolor sit amet consectetur adipisicing elit. Similique explicabo obcaecati mollitia tempora esse soluta, est odio magni ea aspernatur.</p>
        <a href="#" class="btn">Read more</a>
        
        <div class="swiper"><img src="1.jpg"></div>
        
    </div>
</div>

CSS代码 #

:root {
    --primary-color: #333;
    --overlay-color: rgba(46, 49, 49, 0.85);
    --menu-speed: 0.75s;
}

.showcase {
    background-color: var(--primary-color);
    color: #fff;
    height: 100vh; /* 全屏高度 */
    position: relative;
}

.showcase .showcase-inner{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.btn {
    display: inline-block;
    border: none;
    background-color: var(--overlay-color);
    color: #fff;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
}

.btn:hover{
    opacity: 0.7;
}

.menu-wrap {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1;
}

.menu-wrap .toggler {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
    cursor: pointer;
    width: 50px;
    height: 50px;
    opacity: 0;
}

.menu-wrap .hamburger{
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    width: 60px;
    height: 60px;
    padding: 1rem;
    background: var(--overlay-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.menu-wrap .hamburger > div {
    position: relative;
    width: 100%;
    height: 2px;
    background-color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s ease-out;
}

/* 上下线条 */
.menu-wrap .hamburger > div:before,
.menu-wrap .hamburger > div:after{
    content: '';
    position: absolute;
    z-index: 1;
    top: -10px;
    width: 100%;
    height: 2px;
    background: inherit;
}
/* 下移下方线条 */
.menu-wrap .hamburger > div:after {
    top: 10px;
}

.menu-wrap .toggler:checked + .hamburger > div {
    transform: rotate(135deg);
}

.menu-wrap .toggler:checked + .hamburger > div:before,
.menu-wrap .toggler:checked + .hamburger > div:after {
    top: 0;
    transform: rotate(90deg);
}

/* 显示菜单 */
.menu-wrap .toggler:checked ~ .menu {
    visibility: visible;
}

.menu-wrap .toggler:checked ~ .menu > div {
    transform: scale(1);
    transition-duration: var(--menu-speed);
}

.menu-wrap .menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    visibility: hidden;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.menu-wrap .menu > div {
    background: var(--overlay-color);
    border-radius: 50%;
    width: 200vw;
    height: 200vw;
    display: flex;
    flex: none;
    align-items: center;
    justify-content: center;
    transform: scale(0);
    transition: all 0.4s ease;
}

.menu-wrap .menu > div > div {
    text-align: center;
    max-width: 90vw;
    max-height: 100vh;
    transition: opacity 0.4s ease;
}

.menu-wrap .menu > div > div > ul > li {
    list-style: none;
    color: #fff;
    font-size: 1.5rem;
    padding: 1rem;
}

.menu-wrap .menu > div > div > ul > li > a {
    color: inherit;
    text-decoration: none;
    transition: color 0.4s ease;
}

解决方案 #

方法一：通过复选框状态直接隐藏swiper #

利用汉堡菜单的checkbox选中状态，添加CSS选择器控制swiper元素的显示：

/* 汉堡菜单打开时隐藏swiper */
.menu-wrap .toggler:checked ~ ~ .showcase .swiper {
    display: none;
}

原理：menu-wrap和showcase是兄弟元素，通过两个通用兄弟选择器~，选中被勾选的toggler对应的showcase下的swiper，设置其display: none。

方法二：提升菜单遮罩的层级 #

修改菜单遮罩的z-index，让它覆盖在图片上方：

.menu-wrap .menu > div {
    background: var(--overlay-color);
    border-radius: 50%;
    width: 200vw;
    height: 200vw;
    display: flex;
    flex: none;
    align-items: center;
    justify-content: center;
    transform: scale(0);
    transition: all 0.4s ease;
    z-index: 2; /* 新增：提升遮罩层级 */
}

原理：默认情况下swiper没有设置z-index，提升菜单遮罩的层级后，遮罩会覆盖图片，达到隐藏效果。

两种方法任选其一即可，方法一直接隐藏元素，方法二通过遮罩覆盖，可根据需求选择。

内容的提问来源于stack exchange，提问作者Leila Woźniak