我正在为我的网站设计一个侧面导航栏。它工作正常，直到中等屏幕尺寸，但屏幕尺寸减小（<768px）它变得凌乱。 这是我的HTML和CSS代码
.main .row {
padding: 0px;
margin: 0px;
}
/*Remove rounded coners*/
nav.sidebar.navbar {
border-radius: 0px;
}
nav.sidebar,
.main {
-webkit-transition: margin 200ms ease-out;
-moz-transition: margin 200ms ease-out;
-o-transition: margin 200ms ease-out;
transition: margin 200ms ease-out;
}
/* .....NavBar: Icon only with coloring/layout.....*/
/*Allow main to be next to Nav*/
.main {
position: absolute;
width: 100%;
margin-left: 40px;
float: right;
}
/*lets nav bar to be showed on mouseover*/
nav.sidebar:hover + .main {
margin-left: 200px;
}
/*Center Brand*/
nav.sidebar.navbar.sidebar>.container .navbar-brand,
.navbar>.container-fluid .navbar-brand {
margin-left: 0px;
}
/*Center Brand*/
nav.sidebar .navbar-brand,
nav.sidebar .navbar-header {
text-align: center;
width: auto;
margin-left: 0px;
}
/*Center Icons*/
nav.sidebar a {
padding-right: 13px;
}
/*adds border top to first nav box */
nav.sidebar .navbar-nav > li:first-child {
border-top: 1px #e5e5e5 solid;
}
.nav-collapse,
.nav-collapse.collapse {
overflow: visible;
}
.navbar .btn-navbar {
display: none;
}
/*adds border to bottom nav boxes*/
nav.sidebar .navbar-nav > li {
border-bottom: 1px #e5e5e5 solid;
}
/* Colors/style dropdown box*/
nav.sidebar .navbar-nav .open .dropdown-menu {
position: static;
float: none;
width: auto;
margin-top: 0;
background-color: transparent;
border: 0;
-webkit-box-shadow: none;
box-shadow: none;
}
/*allows nav box to use 100% width*/
nav.sidebar,
nav.sidebar .container-fluid {
padding: 0 0px 0 0px;
}
/*colors dropdown box text */
.navbar-inverse .navbar-nav .open .dropdown-menu>li>a {
color: #777;
}
/*gives sidebar width/height*/
nav.sidebar {
width: 200px;
height: inherit;
margin-left: -160px;
float: left;
z-index: 8000;
}
/*give sidebar 100% width;*/
nav.sidebar li {
width: 100%;
}
/* Move nav to full on mouse over*/
nav.sidebar:hover {
margin-left: 0px;
}
/* .....NavBar: Fully showing nav bar..... */
nav.sidebar .navbar-nav .open .dropdown-menu>li>a:hover,
nav.sidebar .navbar-nav .open .dropdown-menu>li>a:focus {
color: #CCC;
background-color: transparent;
}
nav:hover .forAnimate {
opacity: 1;
}
section {
padding-left: 15px;
}<nav class="navbar navbar-inverse sidebar" role="navigation">
<div class="container-fluid">
<div>
<ul class="nav navbar-nav">
<li class="active"><a href="#">Home<span style="font-size:16px;" class="pull-right glyphicon glyphicon-home"></span></a>
</li>
<li><a href="#">Profile<span style="font-size:16px;" class="pull-right glyphicon glyphicon-user"></span></a>
</li>
<li><a href="#">Messages<span style="font-size:16px;" class="pull-right glyphicon glyphicon-envelope"></span></a>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Settings <span class="caret"></span><span style="font-size:16px;" class="pull-right hidden-xs showopacity glyphicon glyphicon-cog"></span></a>
<ul class="dropdown-menu forAnimate" role="menu">
<li><a href="#">Action</a>
</li>
<li><a href="#">Another action</a>
</li>
<li><a href="#">Something else here</a>
</li>
<li class="divider"></li>
<li><a href="#">Separated link</a>
</li>
<li class="divider"></li>
<li><a href="#">One more separated link</a>
</li>
</ul>
</li>
<li><a href="#">Home<span style="font-size:16px;" class="pull-right showopacity glyphicon glyphicon-home"></span></a>
</li>
<li><a href="#">Profile<span style="font-size:16px;" class="pull-right showopacity glyphicon glyphicon-user"></span></a>
</li>
<li><a href="#">Messages<span style="font-size:16px;" class="pull-right showopacity glyphicon glyphicon-envelope"></span></a>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Settings <span class="caret"></span><span style="font-size:16px;" class="pull-right hidden-xs showopacity glyphicon glyphicon-cog"></span></a>
<ul class="dropdown-menu forAnimate" role="menu">
<li><a href="#">Action</a>
</li>
<li><a href="#">Another action</a>
</li>
<li><a href="#">Something else here</a>
</li>
<li class="divider"></li>
<li><a href="#">Separated link</a>
</li>
<li class="divider"></li>
<li><a href="#">One more separated link</a>
</li>
</ul>
</li>
</ul>
</div>
</div>
</nav>
<div class="main">
<!-- Content Here -->
</div>
有人可以建议任何解决方案吗？ 提前致谢。