内容后面的导航下拉菜单 DIV

Question

我已将代码发布在我的代码笔上。我想要做的是将黄色内容框移到导航链接后面。我有两个不同的导航栏。一种用于移动设备，一种用于桌面设备。在桌面和移动设备上单击下拉菜单时，它们似乎位于内容后面 DIV。我尝试了一些没有运气的事情。这个网站是实验性的，但我只是被困住了。任何帮助将非常感激。如果您需要更多信息，请询问。谢谢..

Link: Codepen

代码：

body {
  background-color: #000;
  overflow: hidden;
  font-family: Georgia, "Times New Roman", serif;
  font-family: helvetica, sans-serif;
  margin: 0;
  padding: 0;
}

@media only screen and (max-width: 711px) {
  .linkwrapm {
    background-color: #fff;
    height: 50px;
    margin-top: -16;
    width: 100%;
    text-align: left;
    padding-top: 11px;
  }
  .centerm {
    position: absolute;
    left: 45%;
    top: 14%;
    ;
  }
  .bannerm {
    background-color: #fff;
    height: 58px;
    padding-top: 9px;
    padding-bottom: 19px;
    background-size: 300px 60px;
    background-repeat: no-repeat;
  }
  .navbartextm {
    background-color: #fff;
    color: grey;
    font-size: 27px;
    text-align: left;
    padding-left: 12px;
    font-weight: bold;
  }
  /* mobile menu*/
  .navm {
    padding-left: 45px;
    font-weight: bold;
    text-align: left;
    margin: 0;
    padding-top: 8px;
    padding-bottom: 9px;
    background-color: #eeeeee;
    color: black;
    font-size: 20px;
  }
  /*Func*/
  .multi-level,
  .item ul,
  .nav input[type="checkbox"] {
    display: none;
  }
  #menu:checked~.multi-level,
  .item input:checked~ul {
    display: block;
  }
  /*Arrow*/
  .arrow {
    width: 12px;
    height: 12px;
    vertical-align: middle;
    float: left;
    z-index: 0;
    margin: 17px 1em 0 2em;
  }
  .item input+.arrow {
    transform: rotate(-810deg);
    /*default 90deg*/
    transition: 0.4s;
    /*Default 2s*/
  }
  .item input:checked+.arrow {
    transform: rotate(0deg);
    transition: 0.2s;
  }
  /*Styles*/
  label:hover {
    cursor: pointer;
    color: black;
    font-size: 20px;
  }
  label {
    width: 100%;
    display: block;
    z-index: 3;
    position: relative;
    font-size: 20px;
  }
  .nav {
    width: 68%;
    background-color: white;
    overflow-x: hidden;
  }
  #nav-icon {
    font-size: 45px;
    line-height: 50px;
    padding-left: 2em;
    color: black;
    background-color: #fff;
  }
  #nav-icon:hover {
    color: #A9A9A9;
  }
  .nav ul,
  .nav li,
  label {
    line-height: 40px;
    margin: 0;
    padding: 0 -1em;
    list-style: none;
    text-decoration: none;
    color: #A9A9A9;
    font-weight: 100;
    width: 100%;
  }
  .item ul {
    padding: 0 0.25em;
    border-bottom: 1px solid gray;
  }
  .nav li a {
    line-height: 50px;
    margin: 0;
    padding: 0 4em;
    list-style: none;
    text-decoration: none;
    color: #000000;
    font-weight: 100;
  }
  .nav li a:hover {
    color: #A9A9A9;
  }
  /* mobile menu end*/
  .banner {
    display: none !important;
  }
  /* Full Dropdown Hide */
  .dropdown {
    display: none !important;
  }
  .dd-button {
    display: none !important;
  }
  .dd-button:after {
    display: none !important;
  }
  .dd-button:hover {
    display: none !important;
  }
  .dd-input {
    display: none !important;
  }
  .dd-menu {
    display: none !important;
  }
  .dd-input+.dd-menu {
    display: none !important;
  }
  .dd-input:checked+.dd-menu {
    display: none !important;
  }
  .dd-menu li {
    display: none !important;
  }
  .dd-menu li:hover {
    display: none !important;
  }
  .dd-menu li a {
    display: none !important;
  }
  .dd-menu li.divider {
    display: none !important;
  }
  /* Full Dropdown Hide End */
}

@media only screen and (min-width: 712px) {
  .linkwrapm {
    display: none !important;
  }
  .bannerm {
    display: none !important;
  }
  .linkwrap {
    background-color: #fff;
    height: 50px;
    margin-top: -20px;
    width: 100%;
    text-align: left;
    padding-top: 10px;
  }
  .banner {
    background-color: #fff;
    height: 60px;
    padding-top: 15px;
    padding-bottom: 20px;
  }
  /* Full Navigation*/
  a {
    text-decoration: none;
    color: #000000;
  }
  a:hover {
    color: #222222;
  }
  /* Dropdown */
  .dropdown {
    display: inline-block;
    position: relative;
    margin-left: 10;
  }
  .dd-button {
    display: inline-block;
    border: 1px solid gray;
    border-radius: 4px;
    padding: 10px 30px 10px 20px;
    background-color: #ffffff;
    cursor: pointer;
    white-space: nowrap;
  }
  .dd-button:after {
    content: '';
    position: absolute;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid black;
  }
  .dd-button:hover {
    background-color: #eeeeee;
  }
  .dd-input {
    display: none;
  }
  .dd-menu {
    position: absolute;
    top: 100%;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 0;
    margin: 2px 0 0 0;
    box-shadow: 0 0 6px 0 rgba(0, 0, 0, 0.1);
    background-color: #ffffff;
    list-style-type: none;
  }
  .dd-input+.dd-menu {
    display: none;
  }
  .dd-input:checked+.dd-menu {
    display: block;
  }
  .dd-menu li {
    padding: 10px 20px;
    cursor: pointer;
    white-space: nowrap;
  }
  .dd-menu li:hover {
    background-color: #f6f6f6;
  }
  .dd-menu li a {
    display: block;
    margin: -10px -20px;
    padding: 10px 20px;
  }
  .dd-menu li.divider {
    padding: 0;
    border-bottom: 1px solid #cccccc;
  }
  /* Full Navigation*/
}


/* CONTENT*/

.wrapper {
  background-color: yellow;
  z-index: 1;
  position: absolute;
  left: 0;
  right: 0;
  height: 120px;
  color: white;
  padding: 0;
}

.content {
  background-color: yellow;
  width: 23px;
  clear: both;
}


/* CONTENT*/

<html>
<head>
  <link rel="stylesheet" href="style.css">
  <script src "script.js">
  </script>
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>

<body>
  <div class="banner">
    <img border="0" alt="" src="placeholder.png" width="300" height="60" align="left" hspace="20">
  </div>
  <div class="bannerm">
    <img border="0" alt="" src="placeholder.png" width="300" height="60" align="left" hspace="20">
  </div>
  <div class="linkwrapm">
    <div class="nav">
      <input type="checkbox" id="menu" />
      <label for="menu" id="nav-icon">&#9776;</label>
      <div class="multi-level">
        <div class="item">
          <br>
          <div class="navm">Navigation </div>
          <BR>
          <input type="checkbox" id="A" />
          <img src="images/Arrow.png" class="arrow"><label for="A">Services</label>

          <ul>
            <li><a href="#">Branding</a></li>
            <li><a href="#">Web/App Development</a></li>
            <li><a href="#">Internet Marketing and SEO</a></li>
          </ul>
        </div>
        <div class="item">
          <input type="checkbox" id="B" />
          <img src="images/Arrow.png" class="arrow"><label for="B">Jobs</label>

          <ul>
            <li>
              <div class="sub-item">
                <input type="checkbox" id="B-A" />
              </div>
            </li>
            <li>
              <div class="sub-item">
                <input type="checkbox" id="B-B" />
              </div>
            </li>
            <li><a href="#">Graphic Designer</a></li>
            <li><a href="#">Logo Designer</a></li>

          </ul>
        </div>
        <div class="item">
          <input type="checkbox" id="C" />
          <img src="images/Arrow.png" class="arrow"><label for="C">About Us</label>

          <ul>
            <li><a href="#">Our Team</a></li>
            <li><a href="#">Clients</a></li>
            <li><a href="#">Our Work</a></li>
          </ul>
        </div>
      </div>

    </div>
  </div>
  <div class="linkwrap">
    <label class="dropdown">
  <div class="dd-button">
    Dropdown
  </div>
  <input type="checkbox" class="dd-input" id="test">
  <ul class="dd-menu">
    <li>Action</li>
    <li>Another action</li>
    <li>Something else here</li>
    <li class="divider"></li>
    <li>
      <a href="linkhere">Link to Rane.io</a>
    </li>
  </ul>
</label>
    <label class="dropdown">

  <div class="dd-button">
    Dropdown
  </div>

  <input type="checkbox" class="dd-input" id="test">

  <ul class="dd-menu">
    <li>Action</li>
    <li>Another action</li>
    <li>Something else here</li>
    <li class="divider"></li>
    <li>
      <a href="linkhere">Link to Rane.io</a>
    </li>
  </ul>
  
</label>
    <label class="dropdown">
  <div class="dd-button">
    Dropdown
  </div>

  <input type="checkbox" class="dd-input" id="test">

  <ul class="dd-menu">
    <li>Action</li>
    <li>Another action</li>
    <li>Something else here</li>
    <li class="divider"></li>
    <li>
      <a href="linkhere">Link to Rane.io</a>
    </li>
  </ul>
  
</label>
    <label class="dropdown">
  <div class="dd-button">
    Dropdown
  </div>

  <input type="checkbox" class="dd-input" id="test">

  <ul class="dd-menu">
    <li>Action</li>
    <li>Another action</li>
    <li>Something else here</li>
    <li class="divider"></li>
    <li>
      <a href="linkhere">Link to Rane.io</a>
    </li>
  </ul>
  
</label>
    <label class="dropdown">

  <div class="dd-button">
    Dropdown
  </div>

  <input type="checkbox" class="dd-input" id="test">

  <ul class="dd-menu">
    <li>Action</li>
    <li>Another action</li>
    <li>Something else here</li>
    <li class="divider"></li>
    <li>
      <a href="linkhere">Link to Rane.io</a>
    </li>
  </ul>
  
</label>
  </div>
  <div class="wrapper">
    hi
  </div>
  <div class="content">
  </div>
  <script type="text/javascript" src="script.js"></script>
</body>

</html>

Answer 1

## 最终答案 ##

更改包装器 z-index

    .wrapper{
  width: 100vw;
  background-color:yellow;
    z-index: -10;
  position: absolute;
  margin: 0 auto;
    height: 120px;
    color: white;
    padding: 0;
}

body {
 background-color:#000;
  overflow:hidden;
      font-family: Georgia, "Times New Roman", serif;
      font-family: helvetica, sans-serif;
     margin: 0;
   padding: 0;

}







@media only screen and (max-width: 711px) {



.linkwrapm{

    background-color:#fff;
    height:50px;
 margin-top: -16;
 width:100%;
    text-align:left;
 padding-top:11px;


}






.centerm{
  position: absolute;
  left: 45%;
  top: 14%;;

}







.bannerm{

    background-color:#fff;
    height:58px;
 padding-top: 9px;
 padding-bottom:19px;
    background-size: 300px 60px;
 background-repeat: no-repeat;
}






.navbartextm{

    background-color:#fff;
    color:grey;
 font-size:27px;
 text-align:left;
 padding-left:12px;
    font-weight: bold;

}




/* mobile menu*/




.navm{
   padding-left:45px;
    font-weight: bold;
 text-align:left;
    margin:0;
 padding-top:8px;
 padding-bottom:9px;
 background-color:#eeeeee;
 color:black;
 font-size:20px;

}




/*Func*/

.multi-level, .item ul, .nav input[type="checkbox"] {
    display: none;
}
#menu:checked ~ .multi-level, .item input:checked ~ ul {
    display: block;
}

/*Arrow*/

.arrow {
    width: 12px;
    height: 12px;
    vertical-align: middle;
    float: left;
    z-index: 0;
    margin: 17px 1em 0 2em;

}
.item input + .arrow {
    transform: rotate(-810deg);   /*default 90deg*/
    transition: 0.4s;   /*Default 2s*/
}




.item input:checked + .arrow {
    transform: rotate(0deg);
    transition: 0.2s;

}



/*Styles*/

label:hover {
    cursor: pointer;
 color:black;
 font-size:20px;

}




label {
    width: 100%;
    display: block;
    z-index: 3;
    position: relative;
 font-size:20px;

}
.nav {
    width: 68%;
    background-color: white;
    overflow-x: hidden;


}






#nav-icon {
    font-size: 45px;
    line-height: 50px;
    padding-left: 2em;
    color: black;
    background-color: #fff;


}



#nav-icon:hover {
color: #A9A9A9;

}





.nav ul, .nav li, label {
    line-height: 40px;
    margin: 0;
    padding: 0 -1em;
    list-style: none;
    text-decoration: none;
    color: #A9A9A9;
    font-weight: 100;
    width: 100%;


}
.item ul {
    padding: 0 0.25em;
 border-bottom:1px solid gray;

}
.nav li a {
    line-height: 50px;
    margin: 0;
    padding: 0 4em;
    list-style: none;
    text-decoration: none;
    color: #000000;
    font-weight: 100;

}


.nav li a:hover{

    color: #A9A9A9;

}




/* mobile menu end*/







.banner {
 display: none !important;


}





/* Full Dropdown Hide */

.dropdown {
 display: none !important;


}

.dd-button {

 display: none !important;


}

.dd-button:after {

 display: none !important;


}

.dd-button:hover {

  display: none !important;

}


.dd-input {
  display: none !important;


}




.dd-menu {
  display: none !important;

}

.dd-input + .dd-menu {
 display: none !important;

}

.dd-input:checked + .dd-menu {
  display: none !important;
}

.dd-menu li {
 display: none !important;

}

.dd-menu li:hover {
display: none !important;

}

.dd-menu li a {
  display: none !important;


}

.dd-menu li.divider{

display: none !important;

}


/* Full Dropdown Hide End */




}














@media only screen and (min-width: 712px) {



.linkwrapm{
display: none !important;

}




.bannerm{
display: none !important;

}









.linkwrap{

    background-color:#fff;
    height:50px;
 margin-top: -20px;
 width:100%;
    text-align:left;
 padding-top:10px;

}




.banner{

    background-color:#fff;
    height:60px;
 padding-top: 15px;
 padding-bottom:20px;


}





/* Full Navigation*/



a {
  text-decoration: none;
  color: #000000;
}

a:hover {
  color: #222222;
}

/* Dropdown */





.dropdown {
  display: inline-block;
  position: relative;
  margin-left:10;


}

.dd-button {
  display: inline-block;
  border: 1px solid gray;
  border-radius: 4px;
  padding: 10px 30px 10px 20px;
  background-color: #ffffff;
  cursor: pointer;
  white-space: nowrap;

}

.dd-button:after {
  content: '';
  position: absolute;
  top: 50%;
  right: 20px;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 5px solid black;

}

.dd-button:hover {
  background-color: #eeeeee;

}


.dd-input {
  display: none;
}

.dd-menu {
  position: absolute;
  top: 100%;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 0;
  margin: 2px 0 0 0;
  box-shadow: 0 0 6px 0 rgba(0,0,0,0.1);
  background-color: #ffffff;
  list-style-type: none;

}

.dd-input + .dd-menu {
  display: none;

}

.dd-input:checked + .dd-menu {
  display: block;
}

.dd-menu li {
  padding: 10px 20px;
  cursor: pointer;
  white-space: nowrap;

}

.dd-menu li:hover {
  background-color: #f6f6f6;
}

.dd-menu li a {
  display: block;
  margin: -10px -20px;
  padding: 10px 20px;
}

.dd-menu li.divider{
  padding: 0;
  border-bottom: 1px solid #cccccc;
}



/* Full Navigation*/




}









/* CONTENT*/




.wrapper{
  width: 100vw;
  background-color:yellow;
 z-index: -10;
  position: absolute;
  margin: 0 auto;
 height: 120px;
 color: white;
 padding: 0;
}



.content {

background-color:yellow;
width:23px;
clear:both;
}





/* CONTENT*/

<link rel="stylesheet" href="master.css">



<html>
<head>
  <link rel="stylesheet" href="style.css">
<script src"script.js">  </script>

<meta name="viewport" content="width=device-width, initial-scale=1.0">






</head>
<body>








<div class="banner">


<img border="0" alt="" src="placeholder.png" width="300" height="60" align="left" hspace="20">



</div>




<div class="bannerm">


<img border="0" alt="" src="placeholder.png" width="300" height="60" align="left" hspace="20">




</div>










<div class="linkwrapm">



  <div class="nav">
         <input type="checkbox" id="menu"/>
        <label for="menu" id="nav-icon">&#9776;</label>


        <div class="multi-level">
            <div class="item">
   <br>
    <div class="navm">Navigation </div><BR>

                <input type="checkbox" id="A"/>
                <img src="images/Arrow.png" class="arrow"><label for="A">Services</label>

                <ul>
                    <li><a href="#">Branding</a></li>
                    <li><a href="#">Web/App Development</a></li>
                    <li><a href="#">Internet Marketing and SEO</a></li>
                </ul>
            </div>
            <div class="item">
                <input type="checkbox" id="B"/>
                <img src="images/Arrow.png" class="arrow"><label for="B">Jobs</label>

                <ul>
                    <li><div class="sub-item">
                        <input type="checkbox" id="B-A"/>



                    </div></li>
                    <li><div class="sub-item">
                        <input type="checkbox" id="B-B"/>


                    </div></li>
                    <li><a href="#">Graphic Designer</a></li>
                    <li><a href="#">Logo Designer</a></li>

                </ul>
            </div>
            <div class="item">
                <input type="checkbox" id="C"/>
                <img src="images/Arrow.png" class="arrow"><label for="C">About Us</label>

                <ul>
                    <li><a href="#">Our Team</a></li>
                    <li><a href="#">Clients</a></li>
                    <li><a href="#">Our Work</a></li>
                </ul>
            </div>
        </div>

    </div>








  </div>







<div class="linkwrap">





<label class="dropdown">

  <div class="dd-button">
    Dropdown
  </div>

  <input type="checkbox" class="dd-input" id="test">

  <ul class="dd-menu">
    <li>Action</li>
    <li>Another action</li>
    <li>Something else here</li>
    <li class="divider"></li>
    <li>
      <a href="linkhere">Link to Rane.io</a>
    </li>
  </ul>

</label>







<label class="dropdown">

  <div class="dd-button">
    Dropdown
  </div>

  <input type="checkbox" class="dd-input" id="test">

  <ul class="dd-menu">
    <li>Action</li>
    <li>Another action</li>
    <li>Something else here</li>
    <li class="divider"></li>
    <li>
      <a href="linkhere">Link to Rane.io</a>
    </li>
  </ul>

</label>





<label class="dropdown">

  <div class="dd-button">
    Dropdown
  </div>

  <input type="checkbox" class="dd-input" id="test">

  <ul class="dd-menu">
    <li>Action</li>
    <li>Another action</li>
    <li>Something else here</li>
    <li class="divider"></li>
    <li>
      <a href="linkhere">Link to Rane.io</a>
    </li>
  </ul>

</label>










<label class="dropdown">

  <div class="dd-button">
    Dropdown
  </div>

  <input type="checkbox" class="dd-input" id="test">

  <ul class="dd-menu">
    <li>Action</li>
    <li>Another action</li>
    <li>Something else here</li>
    <li class="divider"></li>
    <li>
      <a href="linkhere">Link to Rane.io</a>
    </li>
  </ul>

</label>







<label class="dropdown">

  <div class="dd-button">
    Dropdown
  </div>

  <input type="checkbox" class="dd-input" id="test">

  <ul class="dd-menu">
    <li>Action</li>
    <li>Another action</li>
    <li>Something else here</li>
    <li class="divider"></li>
    <li>
      <a href="linkhere">Link to Rane.io</a>
    </li>
  </ul>

</label>


</div>












 <div class="wrapper">

hi


</div>
















 <div class="content">







</div>























<script type="text/javascript" src="script.js"></script>

</body>
</html>

旧答案

代码难以理解，classes 和 id 的命名让人很难理解任何东西。此外，您还没有提供很多关于您想要更改的 classes and/or id 的信息，这使得它变得更加困难。

我还会提到您的响应式设计方法非常不正统。

不过我想我明白了。

所以假设它是您想要在顶行后面的 包装器

.wrapper{
  width: 100vw;
  height: 120px;
  position: absolute;
  margin-top: -120px;
  color: white;
}

将位置设置为绝对位置并执行 margin-top: - 元素的高度

现在它阻止了一切，你希望它落后。要获得该功能，您必须将带有 class 包装器的 division 移动到顶部。

   <body>
    <div class="wrapper">
   hi
   </div>

现在它应该在您想要的位置。但现在你看不到了。现在你如果你想让它可见你必须将背景颜色设置为透明的东西，例如使用 RGBA

    background-color:rgb(255, 255, 255, .0);

应该这样做。对我有用！

旧更新

这里是白色 div 与蓝色重叠的例子

body {
  background: #333;
}

.header {
  border: 25px solid red;
  height: 30vh;
  background: rgba(0, 0, 255, .75); /*blue*/
}

.wrapper {
  border: 25px solid lime;
  height: 30vh;
  background: rgba(255, 255, 255, .75); /*white*/

  margin-top: -15vh; /* half way overlapping*/
}

<body>
  <div class="header">
  </div>
  <div class="wrapper">
  </div>
</body>

现在请注意，当我将 html 标签移动到 wrapper 位于顶部而不是 header 时会发生什么！

body {
  background: #333;
}

.header {
  border: 25px solid red;
  height: 30vh;
  background: rgba(0, 0, 255, .5); /*blue*/
  
    margin-top: -15vh; /* half way overlapping*/
}

.wrapper {
  border: 25px solid lime;
  height: 30vh;
  background: rgba(255, 255, 255, .5); /*white*/
}

<body>
  <div class="wrapper">
  </div>

  <div class="header">
  </div>
  
</body>

请注意我是如何将 margin top 从 .wrapper 更改为 .header

内容后面的导航下拉菜单 DIV

Navigation Dropdowns Behind Content DIV

javascript

html

css

css-selectors

placement

## 最终答案 ##

旧答案

旧更新