.pure-menu {
    box-sizing: border-box
    z-index: 9999;
}
.pure-menu-fixed {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 3
}
.pure-menu-item, .pure-menu-list {
    position: relative
}
.pure-menu-list {
    list-style: none;
    margin: 0;
    padding: 0
}
.pure-menu-item {
    padding: 0;
    margin: 0;
    height: 100%
}
.pure-menu-heading, .pure-menu-link {
    display: block;
    text-decoration: none;
    white-space: nowrap
}
.pure-menu-horizontal {
    width: 100%;
    white-space: nowrap
}
.pure-menu-horizontal .pure-menu-list {
    display: inline-block
}
.pure-menu-horizontal .pure-menu-heading, .pure-menu-horizontal .pure-menu-item, .pure-menu-horizontal .pure-menu-separator {
    display: inline-block;
    zoom: 1;
    vertical-align: middle
}
.pure-menu-item .pure-menu-item {
    display: block
}
.pure-menu-children {
    display: none;
    position: absolute;
    left: 100%;
    top: 0;
    margin: 0;
    padding: 0;
    z-index: 3
}
.pure-menu-horizontal .pure-menu-children {
    left: 0;
    top: auto;
    width: inherit
}
.pure-menu-active>.pure-menu-children, .pure-menu-allow-hover:hover>.pure-menu-children {
    display: block;
    position: absolute
}
.pure-menu-has-children>.pure-menu-link:after {
    padding-left: .5em;
    content: "\25B8";
    font-size: small
}
.pure-menu-horizontal .pure-menu-has-children>.pure-menu-link:after {
    content: "\25BE"
}
.pure-menu-scrollable {
    overflow-y: scroll;
    overflow-x: hidden
}
.pure-menu-scrollable .pure-menu-list {
    display: block
}
.pure-menu-horizontal.pure-menu-scrollable .pure-menu-list {
    display: inline-block
}
.pure-menu-horizontal.pure-menu-scrollable {
    white-space: nowrap;
    overflow-y: hidden;
    overflow-x: auto;
    -ms-overflow-style: none;
    -webkit-overflow-scrolling: touch;
    padding: .5em 0
}
.pure-menu-horizontal.pure-menu-scrollable::-webkit-scrollbar {
    display: none
}
.pure-menu-horizontal .pure-menu-children .pure-menu-separator, .pure-menu-separator {
    background-color: #ccc;
    height: 1px;
    margin: .3em 0
}
.pure-menu-horizontal .pure-menu-separator {
    width: 1px;
    height: 1.3em;
    margin: 0 .3em
}
.pure-menu-horizontal .pure-menu-children .pure-menu-separator {
    display: block;
    width: auto
}
.pure-menu-heading {
    text-transform: uppercase;
    color: #565d64
}
.pure-menu-link {
    color: #777
}
.pure-menu-children {
    background-color: #fff
}
.pure-menu-disabled, .pure-menu-heading, .pure-menu-link {
    padding: .5em 1em
}
.pure-menu-disabled {
    opacity: .5
}
.pure-menu-disabled .pure-menu-link:hover {
    background-color: transparent
}
.pure-menu-active>.pure-menu-link, .pure-menu-link:focus, .pure-menu-link:hover {
    background-color: #eee
}
.pure-menu-selected .pure-menu-link, .pure-menu-selected .pure-menu-link:visited {
    color: #000
}



.pure-img-responsive {
    max-width: 100%;
    height: auto;
}
/*
Add transition to containers so they can push in and out.
*/

#layout, #menu, .menu-link {
    -webkit-transition: all 0.2s ease-out;
    -moz-transition: all 0.2s ease-out;
    -ms-transition: all 0.2s ease-out;
    -o-transition: all 0.2s ease-out;
    transition: all 0.2s ease-out;
}
/*
This is the parent `<div>` that contains the menu and the content area.
*/

#layout {
    position: relative;
    left: 0;
    padding-left: 0;
}
#layout.active #menu {
    left: 150px;
    width: 150px;
}
#layout.active .menu-link {
    left: 150px;
}
/*
The content `<div>` is where all your content goes.
*/

.t-content {
    margin: 0 auto;
    padding: 0 2em;
    max-width: 800px;
    margin-bottom: 50px;
    line-height: 1.6em;
}
.content-subhead {
    margin: 50px 0 20px 0;
    font-weight: 300;
    color: #888;
}
/*
The `#menu` `<div>` is the parent `<div>` that contains the `.pure-menu` that
appears on the left side of the page.
*/

#menu {
    margin-left: -150px;
    /* "#menu" width */
    
    width: 150px;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 1000;
    /* so the menu or its navicon stays above all content */
    
    background: #191818;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}
/*
    All anchors inside the menu should be styled like this.
    */

#menu a {
    color: #999;
    border: none;
    padding: 0.6em 0 0.6em 0.6em;
}
/*
    Remove all background/borders, since we are applying them to #menu.
    */

#menu .pure-menu, #menu .pure-menu ul {
    border: none;
    background: transparent;
}
/*
    Add that light border to separate items into groups.
    */

#menu .pure-menu ul, #menu .pure-menu .menu-item-divided {
    border-top: 1px solid #333;
}
/*
        Change color of the anchor links on hover/focus.
        */

#menu .pure-menu li a:hover, #menu .pure-menu li a:focus {
    background: #333;
}
/*
    This styles the selected menu item `<li>`.
    */

#menu .pure-menu-selected, #menu .pure-menu-heading {
    background: #1f8dd6;
}
/*
        This styles a link within a selected menu item `<li>`.
        */

#menu .pure-menu-selected a {
    color: #fff;
}
/*
    This styles the menu heading.
    */

#menu .pure-menu-heading {
    font-size: 110%;
    color: #fff;
    margin: 0;
}
/* -- Dynamic Button For Responsive Menu -------------------------------------*/
/*
The button to open/close the Menu is custom-made and not part of Pure. Here's
how it works:
*/
/*
`.menu-link` represents the responsive menu toggle that shows/hides on
small screens.
*/

.menu-link {
    position: fixed;
    display: block;
    /* show this only on small screens */
    
    top: 0;
    left: 0;
    /* "#menu width" */
    
    background: #000;
    background: rgba(0, 0, 0, 0.7);
    font-size: 10px;
    /* change this value to increase/decrease button size */
    
    z-index: 10;
    width: 2em;
    height: auto;
    padding: 2.1em 1.6em;
}
.menu-link:hover, .menu-link:focus {
    background: #000;
}
.menu-link span {
    position: relative;
    display: block;
}
.menu-link span, .menu-link span:before, .menu-link span:after {
    background-color: #fff;
    width: 100%;
    height: 0.2em;
}
.menu-link span:before, .menu-link span:after {
    position: absolute;
    margin-top: -0.6em;
    content: " ";
}
.menu-link span:after {
    margin-top: 0.6em;
}
/* -- Responsive Styles (Media Queries) ------------------------------------- */
/*
Hides the menu at `48em`, but modify this based on your app's needs.
*/

@media (min-width: 48em) {
    /*让菜单在电脑也隐藏*/
    /* .header,
    .t-content {
        padding-left: 2em;
        padding-right: 2em;
    }

    #layout {
        padding-left: 150px; 
        left: 0;
    }
    #menu {
        left: 150px;
    }

    .menu-link {
        position: fixed;
        left: 150px;
        display: none;
    }

    #layout.active .menu-link {
        left: 150px;
    }*/
}
@media (max-width: 48em) {
    /* Only apply this when the window is small. Otherwise, the following
    case results in extra padding on the left:
        * Make the window small.
        * Tap the menu to trigger the active state.
        * Make the window large again.
    */
    
    #layout.active {
        position: relative;
        left: 150px;
    }
}
.menu-link {
    opacity: 0.4;
}
#menu {
    width: 6em;
}
.menu-link {
    padding: 1.5em 0.8em;
}
#layout.active .menu-link {
    left: 200px;
}
#layout.active #menu {
    width: 200px;
}
#menu a {
    color: #ffff00d1;
}
/*switch开关*/
.switch {
  position: relative;
  display: inline-block;
  width: 54px;
  height: 28px;
  top: 8px;
  left: 5px;
}
.switch input {display:none;}
.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  -webkit-transition: .4s;
  transition: .4s;
}
.slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  -webkit-transition: .4s;
  transition: .4s;
}
input:checked + .slider {
  background-color: #2196F3;
}
input:focus + .slider {
  box-shadow: 0 0 1px #2196F3;
}
input:checked + .slider:before {
  -webkit-transform: translateX(26px);
  -ms-transform: translateX(26px);
  transform: translateX(26px);
}
/* Rounded sliders */
.slider.round {
  border-radius: 34px;
}
.slider.round:before {
  border-radius: 50%;
}