单击下拉导航栏时文本移动

Question

当我将鼠标悬停在导航栏上并且下拉菜单（来自导航栏）展开时，导航栏下方的文本会向下移动。当离开我的导航栏时（停止悬停它），文本站在它应该在的地方。

@font-face {
  font-family: 'Varela Round';
  font-style: normal;
  font-weight: 400;
  src: local('Varela Round Regular'), local('VarelaRound-Regular'), url(https://fonts.gstatic.com/s/varelaround/v12/w8gdH283Tvk__Lua32TysjIfp8uK.ttf) format('truetype');
}
* {
  box-sizing: border-box;
}
:root {
  --accent-color: #45494E;
  --gradient-color: #FBFBFB;
}
a:focus {
  outline: none;
  position: relative;
}
a:focus:after {
  width: 50px;
}
a:after {
  content: "";
  background: #FBFBFB;
  position: absolute;
  bottom: 5px;
  left: 15px;
  height: 3px;
  width: 0;
  transition: 0.5s;
  transition-delay: 0.2s;
}
body {
  background: #FFF; /* Achtergrondkleur pagina */
  font-family: "Varela Round", Nunito, Montserrat, sans-serif;
  margin: 0;
  padding: 0;
}
.menu {
  margin: 15px;
}
.menu > ol {
  list-style: none;
  margin: 30px 0;
  padding: 0;
}
.menu > ol > li {
  background: rgb(121, 121, 121); /* Actergrond menu */
  border-left: 5px solid var(--gradient-color);
  margin-bottom: 1px;
  position: relative;
  transition: 0.5s;
}
.menu > ol > li:nth-child(1) {
  --accent-color: #FDA085;
  --gradient-color: #F6D365;
}
.menu > ol > li:nth-child(2) {
  --accent-color: #BFF098;
  --gradient-color: #6FD6FF;
}
.menu > ol > li:nth-child(3) {
  --accent-color: #EA8D8D;
  --gradient-color: #A890FE;
}
.menu > ol > li:nth-child(4) {
  --accent-color: #D8B5FF;
  --gradient-color: #1EAE98;
}
.menu > ol > li:nth-child(5) {
  --accent-color: #C6EA8D;
  --gradient-color: #FE90AF;
}
.menu > ol > li a {
  color: #FBFBFB;
  display: block;
  padding: 15px;
  position: relative;
  text-decoration: none;
  z-index: 1;
}
.menu > ol > li a:not(:last-child):before {
  content: "\f078";
  font-family: fontAwesome;
  font-size: 0.75em;
  line-height: 50px;
  position: absolute;
  right: 25px;
  top: 0;
  bottom: 0;
  margin: auto;
  transition: 0.5s;
}
.menu > ol > li:focus,
.menu > ol > li:focus-within,
.menu > ol > li:hover {
  z-index: 100;
}
.menu > ol > li:focus:after,
.menu > ol > li:focus-within:after,
.menu > ol > li:hover:after {
  background: linear-gradient(to left, var(--accent-color), var(--gradient-color));
  max-width: 800px;
}
.menu > ol > li:focus .sub-menu,
.menu > ol > li:focus-within .sub-menu {
  max-height: 500px;
}
.menu > ol > li:focus a:before,
.menu > ol > li:focus-within a:before {
  transform: rotate(-180deg);
}
.menu > ol > li:after {
  background: rgb(121, 121, 121); /* Achtergrond menu bij het uitfaden als aangewezen (hetzelfde als achtergrondkleur menu)*/
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  transition: 0.5s;
  max-width: 0;
  overflow: hidden;
}
.menu > ol .sub-menu {
  border-left: 1px solid #FBFBFB;
  margin-left: 22.5px;
  list-style: none;
  max-height: 0px;
  overflow: hidden;
  padding-left: 7.5px;
  position: relative;
  transition: 0.5s;
  z-index: 1;
}
.menu > ol .sub-menu li {
  font-size: 0.9em;
}
.menu > ol .sub-menu li:hover,
.menu > ol .sub-menu li a:focus {
  background: rgba(60, 60, 60, 0.3);
}
.menu > ol .sub-menu li a:after {
  bottom: 5px;
  height: 1px;
}
.menu > ol .sub-menu li a:hover:after,
.menu > ol .sub-menu li a:focus:after {
  width: 15px;
}
@media (min-width: 600px) {
  a:focus,
  a:hover {
    position: relative;
  }
  a:focus:after,
  a:hover:after {
    width: 50px;
  }
  a:after {
    left: 0;
    right: 0;
    margin: auto;
  }
  .menu {
    margin: 0;
    margin-top: 10vh; /* De ruimte tussen het menu en de bovenkant */
  }
  .menu > ol {
    display: block;
    max-width: none;
    text-align: center;
  }
  .menu > ol > li {
    border-top: 5px solid var(--accent-color);
    border-left: 0;
    display: inline-block;
    margin-left: -5px;
    vertical-align: top;
    width: 120px;
  }
  .menu > ol > li:hover:after,
  .menu > ol > li:focus:after,
  .menu > ol > li:focus-within:after {
    background: linear-gradient(to bottom, var(--accent-color), var(--gradient-color));
    border-radius: 3px;
    top: -15px;
    bottom: -15px;
    left: -15px;
    right: -15px;
  }
  .menu > ol > li:hover .sub-menu,
  .menu > ol > li:focus .sub-menu,
  .menu > ol > li:focus-within .sub-menu {
    max-height: 750px;
  }
  .menu > ol > li a:not(:last-child):before {
    right: 12.5px;
  }
  .menu > ol > li:hover a:before {
    transform: rotate(-180deg);
  }
  .menu > ol .sub-menu {
    border-left: 0;
    margin: 15px -15px -15px;
    padding-left: 0;
  }
}
@media (min-width: 775px) {
  .menu > ol > li {
    width: 150px;
  }
  .menu > ol > li a:not(:last-child):before {
    right: 25px;
  }
}

p {
  display: 
}

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <link rel="shortcut icon" type="image/png" href="./images/favicon.png"/>
    <title>Rune's smart home</title>

    <!-- Stylesheets -->
    <link rel="stylesheet" href='https://use.fontawesome.com/releases/v5.0.13/css/solid.css'>
    <link rel="stylesheet" href="./navbar.css">
  </head>
  <body id="everything">
    <nav class="menu">
      <ol>
        <li class="menu-item"><a href="#0">Home</a></li>
        <li class="menu-item"><a href="#0">About</a></li>
        <li class="menu-item">
          <a href="#0">Widgets</a>
          <ol class="sub-menu">
            <li class="menu-item"><a href="#0">Big Widgets</a></li>
            <li class="menu-item"><a href="#0">Bigger Widgets</a></li>
            <li class="menu-item"><a href="#0">Huge Widgets</a></li>
          </ol>
        </li>
        <li class="menu-item">
          <a href="#0">Kabobs</a>
          <ol class="sub-menu">
            <li class="menu-item"><a href="#0">Shishkabobs</a></li>
            <li class="menu-item"><a href="#0">BBQ kabobs</a></li>
            <li class="menu-item"><a href="#0">Summer kabobs</a></li>
          </ol>
        </li>
        <li class="menu-item"><a href="#0">Contact</a></li>
      </ol>
    </nav>

    <p>This is the home page</p>
  </body>
</html>

................................................ ..................................................... ..................................................... ............

Answer 1

如果你没有使用css框架那么我建议你这样做，因为它大大减少了你的代码并且肯定会让你的网页看起来不错。

你可以使用Bootstrap 4，导航栏可以这样设计link： Navigation Bar with dropdown

这是您可以获得的最简洁的导航代码。

希望对您有所帮助。

Answer 2

问题是您的“.submenu”处于相对位置，因此它会影响您的页面流量。

.menu > ol .sub-menu {
  border-left: 1px solid #FBFBFB;
  margin-left: 22.5px;
  list-style: none;
  max-height: 0px;
  overflow: hidden;
  padding-left: 7.5px;
  position: relative; /* Use absolute position to avoid page flow conflicts */
  transition: 0.5s;
  z-index: 1;
}

在这里您需要重新格式化，但使用绝对位置可以避免这些事情发生。

此外，由于您使用了所有继承，因此您的代码很难阅读，请尝试使用适当的类尽量减少您的代码。您不需要链接所有元素。

希望对你有所帮助，有需要的可以多问

Answer 3

让它甜美而简单。 height: 56px; in .menu class in CSS 即可。将解决您的问题。谢谢

@font-face {
  font-family: 'Varela Round';
  font-style: normal;
  font-weight: 400;
  src: local('Varela Round Regular'), local('VarelaRound-Regular'), url(https://fonts.gstatic.com/s/varelaround/v12/w8gdH283Tvk__Lua32TysjIfp8uK.ttf) format('truetype');
}
* {
  box-sizing: border-box;
}
:root {
  --accent-color: #45494E;
  --gradient-color: #FBFBFB;
}
a:focus {
  outline: none;
  position: relative;
}
a:focus:after {
  width: 50px;
}
a:after {
  content: "";
  background: #FBFBFB;
  position: absolute;
  bottom: 5px;
  left: 15px;
  height: 3px;
  width: 0;
  transition: 0.5s;
  transition-delay: 0.2s;
}
body {
  background: #FFF; /* Achtergrondkleur pagina */
  font-family: "Varela Round", Nunito, Montserrat, sans-serif;
  margin: 0;
  padding: 0;
}
.menu {
  margin: 15px;
  height: 56px;
}
.menu > ol {
  list-style: none;
  margin: 30px 0;
  padding: 0;
}
.menu > ol > li {
  background: rgb(121, 121, 121); /* Actergrond menu */
  border-left: 5px solid var(--gradient-color);
  margin-bottom: 1px;
  position: relative;
  transition: 0.5s;
}
.menu > ol > li:nth-child(1) {
  --accent-color: #FDA085;
  --gradient-color: #F6D365;
}
.menu > ol > li:nth-child(2) {
  --accent-color: #BFF098;
  --gradient-color: #6FD6FF;
}
.menu > ol > li:nth-child(3) {
  --accent-color: #EA8D8D;
  --gradient-color: #A890FE;
}
.menu > ol > li:nth-child(4) {
  --accent-color: #D8B5FF;
  --gradient-color: #1EAE98;
}
.menu > ol > li:nth-child(5) {
  --accent-color: #C6EA8D;
  --gradient-color: #FE90AF;
}
.menu > ol > li a {
  color: #FBFBFB;
  display: block;
  padding: 15px;
  position: relative;
  text-decoration: none;
  z-index: 1;
}
.menu > ol > li a:not(:last-child):before {
  content: "\f078";
  font-family: fontAwesome;
  font-size: 0.75em;
  line-height: 50px;
  position: absolute;
  right: 25px;
  top: 0;
  bottom: 0;
  margin: auto;
  transition: 0.5s;
}
.menu > ol > li:focus,
.menu > ol > li:focus-within,
.menu > ol > li:hover {
  z-index: 100;
}
.menu > ol > li:focus:after,
.menu > ol > li:focus-within:after,
.menu > ol > li:hover:after {
  background: linear-gradient(to left, var(--accent-color), var(--gradient-color));
  max-width: 800px;
}
.menu > ol > li:focus .sub-menu,
.menu > ol > li:focus-within .sub-menu {
  max-height: 500px;
}
.menu > ol > li:focus a:before,
.menu > ol > li:focus-within a:before {
  transform: rotate(-180deg);
}
.menu > ol > li:after {
  background: rgb(121, 121, 121); /* Achtergrond menu bij het uitfaden als aangewezen (hetzelfde als achtergrondkleur menu)*/
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  transition: 0.5s;
  max-width: 0;
  overflow: hidden;
}
.menu > ol .sub-menu {
  border-left: 1px solid #FBFBFB;
  margin-left: 22.5px;
  list-style: none;
  max-height: 0px;
  overflow: hidden;
  padding-left: 7.5px;
  position: relative;
  transition: 0.5s;
  z-index: 1;
}
.menu > ol .sub-menu li {
  font-size: 0.9em;
}
.menu > ol .sub-menu li:hover,
.menu > ol .sub-menu li a:focus {
  background: rgba(60, 60, 60, 0.3);
}
.menu > ol .sub-menu li a:after {
  bottom: 5px;
  height: 1px;
}
.menu > ol .sub-menu li a:hover:after,
.menu > ol .sub-menu li a:focus:after {
  width: 15px;
}
@media (min-width: 600px) {
  a:focus,
  a:hover {
    position: relative;
  }
  a:focus:after,
  a:hover:after {
    width: 50px;
  }
  a:after {
    left: 0;
    right: 0;
    margin: auto;
  }
  .menu {
    margin: 0;
    margin-top: 10vh; /* De ruimte tussen het menu en de bovenkant */
  }
  .menu > ol {
    display: block;
    max-width: none;
    text-align: center;
  }
  .menu > ol > li {
    border-top: 5px solid var(--accent-color);
    border-left: 0;
    display: inline-block;
    margin-left: -5px;
    vertical-align: top;
    width: 120px;
  }
  .menu > ol > li:hover:after,
  .menu > ol > li:focus:after,
  .menu > ol > li:focus-within:after {
    background: linear-gradient(to bottom, var(--accent-color), var(--gradient-color));
    border-radius: 3px;
    top: -15px;
    bottom: -15px;
    left: -15px;
    right: -15px;
  }
  .menu > ol > li:hover .sub-menu,
  .menu > ol > li:focus .sub-menu,
  .menu > ol > li:focus-within .sub-menu {
    max-height: 750px;
  }
  .menu > ol > li a:not(:last-child):before {
    right: 12.5px;
  }
  .menu > ol > li:hover a:before {
    transform: rotate(-180deg);
  }
  .menu > ol .sub-menu {
    border-left: 0;
    margin: 15px -15px -15px;
    padding-left: 0;
  }
}
@media (min-width: 775px) {
  .menu > ol > li {
    width: 150px;
  }
  .menu > ol > li a:not(:last-child):before {
    right: 25px;
  }
}

p {
  display: 
}

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <link rel="shortcut icon" type="image/png" href="./images/favicon.png"/>
    <title>Rune's smart home</title>

    <!-- Stylesheets -->
    <link rel="stylesheet" href='https://use.fontawesome.com/releases/v5.0.13/css/solid.css'>
    <link rel="stylesheet" href="./navbar.css">
  </head>
  <body id="everything">
    <nav class="menu">
      <ol>
        <li class="menu-item"><a href="#0">Home</a></li>
        <li class="menu-item"><a href="#0">About</a></li>
        <li class="menu-item">
          <a href="#0">Widgets</a>
          <ol class="sub-menu">
            <li class="menu-item"><a href="#0">Big Widgets</a></li>
            <li class="menu-item"><a href="#0">Bigger Widgets</a></li>
            <li class="menu-item"><a href="#0">Huge Widgets</a></li>
          </ol>
        </li>
        <li class="menu-item">
          <a href="#0">Kabobs</a>
          <ol class="sub-menu">
            <li class="menu-item"><a href="#0">Shishkabobs</a></li>
            <li class="menu-item"><a href="#0">BBQ kabobs</a></li>
            <li class="menu-item"><a href="#0">Summer kabobs</a></li>
          </ol>
        </li>
        <li class="menu-item"><a href="#0">Contact</a></li>
      </ol>
    </nav>

    <p>This is the home page</p>
  </body>
</html>

单击下拉导航栏时文本移动

Text moves when clicked on dropdown navigation bar

html

css

navigationbar

drop-down-menu

dropdown