html - 扩展 sidenav 时 CSS Hamburger 不旋转

Question

我无法让我的 ccs made hamburger 打开展开/折叠我的 sidenav，最重要的是。如果我让它展开/折叠，它就会停止旋转。请看codepen 演示，感谢反馈

我想我在 css 中犯了一个错误，但我很难追踪这个问题。我真的很感激第二双眼睛。

HTML

<div class="container-fluid">
  <div class="row d-flex d-md-block flex-nowrap wrapper">
    <div class="col-md-2 float-left col-1 pl-0 pr-0 collapse width show" id="sidebar">
      <div class="list-group border-0 card bg-faded text-center text-md-left">
        <a class="list-group-item d-inline-block collapsed" data-parent="#sidebar" href="#"><i class="fa fa-heart"></i> <span class="hidden-sm-down">Item 4</span></a>
        <a class="list-group-item d-inline-block collapsed" data-parent="#sidebar" href="#"><i class="fa fa-list"></i> <span class="hidden-sm-down">Item 5</span></a>
        <a class="list-group-item d-inline-block collapsed" data-parent="#sidebar" href="#"><i class="fa fa-clock-o"></i> <span class="hidden-sm-down">Link</span></a>
      </div>
    </div>

    <main class="col-md-10 float-left col px-5 px-md-3 py-3 main">
      <!--<a data-target="#sidebar" data-toggle="collapse" href="#">
            a
            </a>-->
      <div class="outer-menu">
        <input data-target="#sidebar" class="checkbox-toggle" data-toggle="collapse" type="checkbox">
        <div class="hamburger">
          <div>
          </div>
        </div>
      </div>
    </main>
    <h1 class="display-3 hidden-xs-down">Bootstrap 4 Dashboard</h1>
  </div>
</div>

CSS

#sidebar {
    overflow: hidden;
    z-index: 3;
}
#sidebar .list-group {
    min-width: 300px;
    min-height: 100vh;
}

#sidebar .list-group-item {
    border-radius: 0;
    white-space: nowrap;
}

@media (max-width:768px) {
    #sidebar {
        min-width: 35px;
        max-width: 40px;
        overflow-y: auto;
        overflow-x: visible;
        transition: all 0.25s ease;
        transform: translateX(-45px);
        position: fixed;
    }

    #sidebar.show {
        transform: translateX(0);
    }

    #sidebar::-webkit-scrollbar{ width: 0px; }

    #sidebar, #sidebar .list-group {
        min-width: 35px;
        overflow: visible;
    }
    /* overlay sub levels on small screens */
    #sidebar .list-group .collapse.show, #sidebar .list-group .collapsing {
        position: relative;
        z-index: 1;
        width: 190px;
        top: 0;
    }
    #sidebar .list-group > .list-group-item {
        text-align: center;
        padding: .75rem .5rem;
    }
    /* hide caret icons of top level when collapsed */
    #sidebar .list-group > .list-group-item[aria-expanded="true"]::after,
    #sidebar .list-group > .list-group-item[aria-expanded="false"]::after {
        display:none;
    }
}

.collapse.show {
  visibility: visible;
}
.collapsing {
  visibility: visible;
  height: 0;
  -webkit-transition-property: height, visibility;
  transition-property: height, visibility;
  -webkit-transition-timing-function: ease-out;
  transition-timing-function: ease-out;
}
.collapsing.width {
  -webkit-transition-property: width, visibility;
  transition-property: width, visibility;
  width: 0;
  height: 100%;
  -webkit-transition-timing-function: ease-out;
  transition-timing-function: ease-out;
}


/* hamburger */

/*********************/
.outer-menu {
  position: relative;
  left: 0;
  z-index: 1;
}
.outer-menu .checkbox-toggle {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  cursor: pointer;
  width: 60px;
  height: 60px;
  opacity: 0;
}
.outer-menu .checkbox-toggle:checked + .hamburger > div {
  transform: rotate(135deg);
}
.outer-menu .checkbox-toggle:checked + .hamburger > div:before,
.outer-menu .checkbox-toggle:checked + .hamburger > div:after {
  top: 0;
  transform: rotate(90deg);
}
.outer-menu .checkbox-toggle:checked + .hamburger > div:after {
  opacity: 0;
}
.outer-menu .checkbox-toggle:checked ~ .menu {
  pointer-events: auto;
  visibility: visible;
}
.outer-menu .checkbox-toggle:checked ~ .menu > div {
  transform: scale(1);
  transition-duration: .75s;
}
.outer-menu .checkbox-toggle:checked ~ .menu > div > div {
  opacity: 1;
  transition: opacity 0.4s ease 0.4s;
}
.outer-menu .checkbox-toggle:hover + .hamburger {
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.1);
}
.outer-menu .checkbox-toggle:checked:hover + .hamburger > div {
  transform: rotate(225deg);
}
.outer-menu .hamburger {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  width: 60px;
  height: 60px;
  padding: .5em 1em;
  background: rgba(33, 150, 243, 0.75);
  border-radius: 0 0.12em 0.12em 0;
  cursor: pointer;
  transition: box-shadow 0.4s ease;
  backface-visibility: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.outer-menu .hamburger > div {
  position: relative;
  flex: none;
  width: 100%;
  height: 2px;
  background: #fefefe;
  transition: all 0.4s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}
.outer-menu .hamburger > div:before,
.outer-menu .hamburger > div:after {
  content: '';
  position: absolute;
  z-index: 1;
  top: -10px;
  left: 0;
  width: 100%;
  height: 2px;
  background: inherit;
  transition: all 0.4s ease;
}
.outer-menu .hamburger > div:after {
  top: 10px;
}

Answer 1

你的 codepen 不工作，应该先加载 jquery。

无论如何，这是我修复它的尝试。以全屏模式查看。正确加载 jquery 后，您的代码可以正常工作，但旋转效果除外，因为您的选择器错误。

请参阅 CSS 中的 汉堡包 和 X 按钮 部分。

#sidebar {
    overflow: hidden;
    z-index: 3;
}
#sidebar .list-group {
    min-width: 300px;
    min-height: 100vh;
}

#sidebar .list-group-item {
    border-radius: 0;
    white-space: nowrap;
}

@media (max-width:768px) {
    #sidebar {
        min-width: 35px;
        max-width: 40px;
        overflow-y: auto;
        overflow-x: visible;
        transition: all 0.25s ease;
        transform: translateX(-45px);
        position: fixed;
    }
    
    #sidebar.show {
        transform: translateX(0);
    }

    #sidebar::-webkit-scrollbar{ width: 0px; }
    
    #sidebar, #sidebar .list-group {
        min-width: 35px;
        overflow: visible;
    }
    /* overlay sub levels on small screens */
    #sidebar .list-group .collapse.show, #sidebar .list-group .collapsing {
        position: relative;
        z-index: 1;
        width: 190px;
        top: 0;
    }
    #sidebar .list-group > .list-group-item {
        text-align: center;
        padding: .75rem .5rem;
    }
    /* hide caret icons of top level when collapsed */
    #sidebar .list-group > .list-group-item[aria-expanded="true"]::after,
    #sidebar .list-group > .list-group-item[aria-expanded="false"]::after {
        display:none;
    }
}

.collapse.show {
  visibility: visible;
}
.collapsing {
  visibility: visible;
  height: 0;
  -webkit-transition-property: height, visibility;
  transition-property: height, visibility;
  -webkit-transition-timing-function: ease-out;
  transition-timing-function: ease-out;
}
.collapsing.width {
  -webkit-transition-property: width, visibility;
  transition-property: width, visibility;
  width: 0;
  height: 100%;
  -webkit-transition-timing-function: ease-out;
  transition-timing-function: ease-out;
}


/* hamburger */

/*********************/
.outer-menu {
  position: relative;
  left: 0;
  z-index: 1;
}
.outer-menu .checkbox-toggle {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  cursor: pointer;
  width: 60px;
  height: 60px;
  opacity: 0;
}
.outer-menu .hamburger {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  width: 60px;
  height: 60px;
  padding: .5em 1em;
  background: rgba(33, 150, 243, 0.75);
  border-radius: 0 0.12em 0.12em 0;
  cursor: pointer;
  transition: box-shadow 0.4s ease;
  backface-visibility: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.outer-menu .hamburger > div {
  position: relative;
  flex: none;
  width: 100%;
  height: 2px;
  background: #fefefe;
  transition: all 0.4s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}
.outer-menu .checkbox-toggle.collapsed ~ .hamburger > div {
  transform: rotate(0deg);
} 

.outer-menu .checkbox-toggle + .hamburger > div:before,
.outer-menu .checkbox-toggle + .hamburger > div:after {
  content: '';
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: inherit;
  transition: all 0.4s ease;
}
.outer-menu .checkbox-toggle.collapsed + .hamburger > div:before {
  top: -10px;
}
.outer-menu .checkbox-toggle.collapsed + .hamburger > div:before,
.outer-menu .checkbox-toggle.collapsed + .hamburger > div:after {
  transform: rotate(0deg);
  opacity: 1;
}
.outer-menu .checkbox-toggle.collapsed + .hamburger > div:after {
  top: 10px;
}
/* X button */

.outer-menu .checkbox-toggle + .hamburger > div {
  transform: rotate(135deg);
}
.outer-menu .checkbox-toggle + .hamburger > div:before,
.outer-menu .checkbox-toggle + .hamburger > div:after {
  top: 0;
  transform: rotate(90deg);
}
.outer-menu .checkbox-toggle + .hamburger > div:after {
  opacity: 0;
}
.outer-menu .checkbox-toggle ~ .menu {
  pointer-events: auto;
  visibility: visible;
}
.outer-menu .checkbox-toggle ~ .menu > div {
  transform: scale(1);
  transition-duration: .75s;
}
.outer-menu .checkbox-toggle ~ .menu > div > div {
  opacity: 1;
  transition: opacity 0.4s ease 0.4s;
}
.outer-menu .checkbox-toggle:hover + .hamburger {
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.1);
}
.outer-menu .checkbox-toggle.collapsed:hover + .hamburger > div {
  transform: rotate(180deg);
}
.outer-menu .checkbox-toggle:hover + .hamburger > div {
  transform: rotate(225deg);
}

<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js"></script> 
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"></script>
<div class="container-fluid">
  <div class="row d-flex d-md-block flex-nowrap wrapper">
    <div class="col-md-2 float-left col-1 pl-0 pr-0 collapse width collapse" id="sidebar">
      <div class="list-group border-0 card bg-faded text-center text-md-left">
        <a class="list-group-item d-inline-block collapsed" data-parent="#sidebar" href="#"><i class="fa fa-heart"></i> <span class="hidden-sm-down">Item 4</span></a>
        <a class="list-group-item d-inline-block collapsed" data-parent="#sidebar" href="#"><i class="fa fa-list"></i> <span class="hidden-sm-down">Item 5</span></a>
        <a class="list-group-item d-inline-block collapsed" data-parent="#sidebar" href="#"><i class="fa fa-clock-o"></i> <span class="hidden-sm-down">Link</span></a>
      </div>
    </div>

    <main class="col-md-10 float-left col px-5 px-md-3 py-3 main">
      <!--<a data-target="#sidebar" data-toggle="collapse" href="#">
            a
            </a>-->
      <div class="outer-menu">
        <input data-target="#sidebar" class="checkbox-toggle collapsed" data-toggle="collapse" type="checkbox">
        <div class="hamburger">
          <div>
          </div>
        </div>
      </div>
    </main>
    <h1 class="display-3 hidden-xs-down">Bootstrap 4 Dashboard</h1>
  </div>
</div>