如何在正确位置的导航栏中的菜单内添加子菜单

Question

您好，我正在尝试在 HTML 中正确位置的菜单中添加子菜单。但是我在定位方面面临一个问题。我尝试通过使用完整的ul 和li 标签来解决这个问题。但是我在尺寸方面仍然面临很多问题，所以我决定回到旧的方式。该示例在链接中。我确信我必须换班，但我几乎没有想法了。所以请兄弟们帮帮我。这是Link。

Answer 1

请使用下拉菜单和子菜单deropdown添加此代码

这里有演示链接https://jsfiddle.net/JentiDabhi/5hmgv8h4/

HTML

<ul class="nav-list"> 
                <li class="li-list"><a href="#Home" class="active">Home</a></li>

                <li class="li-list dropdown">
                    <a href="javascript:void(0)" class="dropbtn">Scoreboard</a>
                    <ul class="dropdown-content">
                     <li class="li-list dropdown">
                        <a href="javascript:void(0)" class="dropbtn-sub">Europe continent</a>
                                 <ul class="dropdown-content">
                                    <a href="#">Deep Menu 2</a>
                                    <a href="#">Deep Menu 2</a>
                                 </ul>
                            </li>

                         <li class="li-list"><a href="#">South continent</a></li>
                        <li class="li-list"> <a href="#">Asia continent</a></li>
                         <li class="li-list"><a href="#">Africa continent</a></li>
                         <li class="li-list"><a href="#">Australia continent</a></li>
                         <li class="li-list"><a href="#" id="bottom">North continent</a></li>
                    </ul>
                 </li>
                <li class="dropdown">
                    <a href="javascript:void(0)" class="dropbtn">Communities</a>
                    <div class="dropdown-content">
                        <a href="#">Link 1</a>
                        <a href="#">Link 2</a>
                        <a href="#">Link 3</a>
                    </div>
                 </li>

            </ul>

CSS

.nav-list{
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

.li-list{
     float: left;
}

li a, .dropbtn {
    display: inline-block;
    color: white;
    padding: 9px 12px;
    text-decoration: none;
}

li a:hover, .dropdown:hover .dropbtn {
    background-color: #f7ffba;
    color:red;
}

li.dropdown {
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: #333;
    width: 160px;

    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
    padding: 0;
}
.dropdown-content li{
  list-style: none;
  width: 100%;
  display: inline-block;
}
.dropdown-content a {
    color: black;
    padding: 4px 6px;
    text-decoration: none;
    display: block;
    text-align: left;
    border-bottom: 1px dotted #f7ffba;
    /*position:relative;*/
}

.dropdown-content a:hover {background-color: #f7ffba}

.dropdown:hover > .dropdown-content ,
.dropdown-content .dropdown:hover > .dropdown-content {
    display: block;
}
.dropdown-content .dropdown > .dropdown-content{
  left: 100%;
  top: 0;
}

Answer 2

为子菜单下拉添加 css

.sub_mebu.dropdown-content{left:100%;}

Answer 3

只需添加另一个css规则，即

.dropdown li.dropdown {
    display: inline-block;
    float:right;
}

希望对你有帮助 工作fiddle

Answer 4

子菜单

CSS

.dropdown-content .dropdown-content
{
  left:100%;
}

希望这会有所帮助。

Answer 5

您使用了太多不必要的 html 标签。 检查我的笔https://codepen.io/ery/pen/JJvdQX 以获得更简单的下拉菜单。 希望对你有帮助

/* LEVEL 0 */
.nav ul {
  text-align: left; 
  margin: 0; 
  padding: 0;
}
.nav li {
  display: inline-block; 
  position: relative; 
  list-style: none;
}
.nav li > a {
  display: block;
  line-height: 32px;
  background: #666;
  color: #FFF;
  padding: 0 16px;
  text-decoration: none;
}
.nav li:hover > a {
  background: #333;
}

/* LEVEL 1 */

.nav ul ul {
  position: absolute;
  width: 160px;
  left: 0;
  top: 32px; /* same value with line 13 */
  background: #333;
}

.nav li li {display: list-item}
.nav li li a {background: transparent;}
.nav li li a:hover {background: #999; }

/* LEVEL 2 */
.nav ul ul ul {
  top: 0;
  left: 160px; /* same value with line 28 */
}

/* Dropdown triggers */
.nav ul ul, .nav ul li:hover ul ul, .nav ul ul li:hover ul ul {display: none;}
.nav ul li:hover ul, .nav ul ul li:hover ul, .nav ul ul ul li:hover ul {display: block;}

<div class="nav">
  <ul>
    <li><a href="#">menu 01</a>
      <ul>
        <li><a href="#">submenu 01</a>
          <ul>
            <li><a href="#">sub-submenu 01</a></li>
            <li><a href="#">sub-submenu 02</a></li>
          </ul>
        </li>
        <li><a href="#">submenu 02</a></li>
        <li><a href="#">submenu 03</a></li>
      </ul>
    </li>
    <li><a href="#">menu 02</a></li>
    <li><a href="#">menu 03</a></li>
    <li><a href="#">menu 04</a></li>
  </ul>
</div>