当将一个菜单项悬停在另一个菜单项上时，它会与前一个菜单项重叠吗？请测试菜单功能？答案

【问题标题】：when hover on one menu item to another menu item it overlaps to previous one? please test menu functionality?当将一个菜单项悬停在另一个菜单项上时，它会与前一个菜单项重叠吗？请测试菜单功能？
【发布时间】：2020-03-03 21:16:36
【问题描述】：

我希望我的 megamenu div 带有一些过渡效果所以我添加 visibility: hidden; opacity: 0; on .submenu class 和 visibility: visible;不透明度：1； 在 ul.menu1 li:hover .submenu 类上。它正在工作，但是当我将鼠标悬停到一个菜单到另一个菜单时，它会自动显示上一个菜单代码，例如，如果我将鼠标悬停在联系我们菜单上，然后悬停在产品菜单上，然后鼠标向下移动以获取任何链接，则它会转到联系菜单选项卡并显示联系人菜单代码。

如果我删除 visibility 和 opacity 属性 并添加简单的 display:none; 和 display:block; 那么它工作正常但我想要我的 megamenu 悬停时带有一些淡入淡出效果。

我想要这个网站 (https://www.margcompusoft.com/) 超级菜单悬停效果样式。

我附上 html 和 css 代码供您参考。

如果我删除可见性和不透明度属性并添加简单的 display:none; 和 display:block; 那么它工作正常但我希望我的 megamenu 悬停一些淡化效果。

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Multi Level Drop Down Menu</title>
    <link rel="stylesheet" type="text/css" href="style.css">
    <link rel="stylesheet" type="text/css" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
    <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
</head>
<body>


    <div class="container-fluid">
            <div class="row">
                <div class="col-md-3"></div>
                <div class="col-md-9">
                    <div class="mainbox">
            <div class="navigation">
                    <ul class="menu1">
                        <li><a href="#">Home</a></li>
                        <li><a href="#">About us</a>

                            <div class="submenu submenu2">
                                <ul>
                                    <h3>SERVICES 1</h3>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 1</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 2</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 3</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 4</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 5</a></li>
                                </ul>
                            </div>

                        </li>
                        <li><a href="#">Services</a>

                            <div class="submenu">
                                <ul>
                                    <h3>SERVICES 1</h3>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 1</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 2</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 3</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 4</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 5</a></li>
                                </ul>
                                <ul>
                                    <h3>SERVICES 2</h3>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 1</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 2</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 3</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 4</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 5</a></li>
                                </ul>
                                <ul>
                                    <h3>SERVICES 3</h3>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 1</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 2</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 3</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 4</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 5</a></li>
                                </ul>
                                <ul>
                                    <h3>SERVICES 4</h3>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 1</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 2</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 3</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 4</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 5</a></li>
                                </ul>
                            </div>

                        </li>
                        <li><a href="#">Products</a>

                            <div class="submenu submenu1">
                                <ul>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 1</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 2</a></li>
                                    <li><a href="sadfsfd"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 3</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 4</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 5</a></li>
                                </ul>
                                <ul>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 1</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 2</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 3</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 4</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 5</a></li>
                                </ul>
                                <ul>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 1</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 2</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 3</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 4</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 5</a></li>
                                </ul>
                            </div>


                        </li>
                        <li><a href="#">Career</a></li>
                        <li><a href="#">Contact us</a>

                            <div class="submenu">
                                <ul>
                                    <h3>SERVICES 1</h3>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 1</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 2</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 3</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 4</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 5</a></li>
                                </ul>
                                <ul>
                                    <h3>SERVICES 2</h3>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 1</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 2</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 3</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 4</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 5</a></li>
                                </ul>
                                <ul>
                                    <h3>SERVICES 3</h3>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 1</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 2</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 3</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 4</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 5</a></li>
                                </ul>
                                <ul>
                                    <h3>SERVICES 4</h3>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 1</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 2</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 3</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 4</a></li>
                                    <li><a href="#"><i class="fa fa-caret-right" aria-hidden="true"></i> Services 5</a></li>
                                </ul>
                            </div>

                        </li>
                    </ul>
            </div>
        </div>
                </div>
            </div>
        </div>  




</div>



</body>
</html>

*{ margin: 0; padding: 0; box-sizing: border-box; transition: all 0.3s; }

ul,li,p{ margin: 0; padding: 0; list-style: none; }




.mainbox{ width: 100%; float:left; padding: 0 0%; text-align: center; position: relative;}

.navigation{ width: auto;  float: right;  }

ul.menu1{ width: 100%; margin: 0 auto; text-align: right;  }
ul.menu1 li{ display: inline-block; transition: all 0.5s;}
ul.menu1 li a{ color: #000; padding: 10px 10px; display: block; }
ul.menu1 li a:hover{ background: none; text-decoration: none; }

.submenu{ position: absolute; background: #6f4858; width: 100%; left: 0; right: 0; margin: 0 auto; display: none; /*visibility: hidden; opacity: 0;*/ transition: all 0.5s;}
.submenu.submenu1 ul{ width: 33.3%; }

.submenu.submenu2{ width: auto;  min-width: 200px;  left:inherit; right: inherit; margin: inherit;}
.submenu.submenu2 ul{ width: 100%;  }

ul.menu1 li:hover .submenu{ display: block; /*visibility: visible; opacity: 1;*/ background: #6f4858; transition: all 0.5s;}

ul.menu1 li:hover>a{ background: #6f4858; color: #fff; }

.submenu ul{ width: 25%; float: left;  padding: 20px; padding-top: 10px; }
.submenu ul li{ display: block; transition: all 0.5s; text-align: left;  padding-bottom: 0; box-sizing: border-box;}
.submenu ul li a{ padding-left: 0; border-bottom: #fff dashed 1px; position: relative; color: #fff; }
.submenu ul li a i{ transition: none; } 
.submenu ul li a:hover{ padding-left: 5px; }

.submenu ul li a:after{ content: ""; transition: all 0.5s; position: absolute; left: 0; bottom: 0;  width: 0; }
.submenu ul li a:hover:after{ width: 100%; border-bottom: #FAA500 dashed 1px; }

.submenu ul li:hover a{ color:#FAA500;}

.submenu ul h3{ display: block; color: #fff; font-size: 20px; color: #fff;
    font-size: 20px;
    margin-bottom: 20px;
    border-bottom: #fff solid 3px;
    text-align: left;
    padding-bottom: 10px; margin-bottom: 7px;  }

【问题讨论】：

标签： html css css-transitions

【解决方案1】：

您能否检查以下解决方案，我们已在您的 css 中对转换属性进行了细微更改，并且可以正常工作。希望它对你有用。

*{ margin: 0; padding: 0; box-sizing: border-box;}

ul,li,p{ margin: 0; padding: 0; list-style: none; }




.mainbox{ width: 100%; float:left; padding: 0 0%; text-align: center; position: relative;}

.navigation{ width: auto; float: right; overflow-x:hidden; }
.navigation:hover { overflow-x:auto;}
ul.menu1{ width: 100%; margin: 0 auto; text-align: right; }
ul.menu1 li{ display: inline-block; }
ul.menu1 li a{ color: #000; padding: 10px 10px; display: block; }
ul.menu1 li a:hover{ background: none; text-decoration: none; }

.submenu{ position: absolute; background: #6f4858; width: 100%; left: 0; right: 0; margin: 0 auto;/* display: none; */ visibility: hidden; opacity: 0; transition: none; }
.submenu.submenu1 ul{ width: 33.3%; }

.submenu.submenu2{ width: auto; min-width: 200px; left:inherit; right: inherit; margin: inherit;}
.submenu.submenu2 ul{ width: 100%; }

ul.menu1 li:hover .submenu{ visibility: visible; opacity: 1; background: #6f4858; transition: all 0.7s; transition-delay:0.2s;}

ul.menu1 > li:hover> a { background: #6f4858; color: #fff; transition: all 0.7s; }

.submenu ul{ width: 25%; float: left; padding: 20px; padding-top: 10px; }
.submenu ul li{ display: block; text-align: left; padding-bottom: 0; box-sizing: border-box;}
.submenu ul li a{ padding-left: 0; border-bottom: #fff dashed 1px; position: relative; color: #fff; }
.submenu ul li a i{ transition: none; } 
.submenu ul li a:hover{ padding-left: 5px; padding-right:0px; transition: all 0.7s; }

.submenu ul li a:after{ content: ""; position: absolute; left: 0; bottom: 0; width: 0; transition: all 0.7s; }
.submenu ul li a:hover:after{ width: 100%; border-bottom: #FAA500 dashed 1px; }

.submenu ul li:hover a{ color:#FAA500;}

.submenu ul h3{ display: block; color: #fff; font-size: 20px; color: #fff;
font-size: 20px;
margin-bottom: 20px;
border-bottom: #fff solid 3px;
text-align: left;
padding-bottom: 10px; margin-bottom: 7px; }

【讨论】：