* {
    margin: 0;
    padding: 0;
}
html,body,.wrapper{
    height:100%;
    min-width: 700px;
}
.wrapper{
    position: relative;
}
.wrapper .header{
    height: 70px;
    width: 100%;
    background-color: #354457;
}
.header .logo{
    height: 70px;
    line-height: 70px;
    padding-left: 20px;
    font-size: 14px;
    color: #b3bcc5;
}
.header .logo img{
    height:30px;
    width:30px;
    vertical-align: middle;
}
.left-menu{
    height: calc(100% - 70px);
    width: 200px;
    background-color: #4d5e70;
    color: #b3bcc5;
    /* float: left; */
}
.left-menu dl dt,.left-menu dl dd{
    height: 40px;
    line-height: 40px;
}
.left-menu dl dt{
    padding-left: 8px;
    font-weight: bold;
}
.left-menu dl dd{
    padding-left: 30px;
    cursor: pointer;
}
.left-menu dl dd:hover{
    background-color: rgba(255, 255, 255, 0.5);
    color: #354457;
}
.left-menu dl dd.active{
    background-color:#ddd;
    color: #354457;
}
.right-content{
    height:calc(100% - 70px);
    width:calc(100% - 200px);
    min-width: 500px;
    background-color: #eee;
    position: absolute;
    margin-left: 200px;
    top:70px;
}
.right-content .content{
    display: none;
}
.right-content .content.content-active {
    display: block;
}
.content.add-student{
    margin: 50px auto;
    width:400px;
}
.content form label{
    display: inline-block;
    width:100px;
    text-align: right;
    margin-right:10px;
    font-size: 16px;
}
.content form label.label-sex{
    width: 20px;
    /* text-align: left; */
}
.content form label, form input{
    font-size: 16px;
}
.content form div{
    margin:10px 0;
}
.content form .btn{
    /* padding: 5px 25px; */
    width: 90px;
    height: 30px;
    line-height: 30px;
    margin-right: 10px;
}
.content table{
    width:100%;
    text-align: center;
}
.content table thead{
    background-color: #e3e8ee;
    font-size: 14px;
    color: #646987;
}
.content table tbody {
    background-color: #fff;
    font-size: 14px;
}
.content table tr{
    height:30px;
    line-height: 30px；
}
table tr td .btn {
    padding: 3px 10px;
    color: #fff;
    border: none;
    outline: none;
    cursor: pointer;
}
table tr td .btn.edit{
    background-color: #5cb85c;
}
table tr td .btn.del{
    background-color: #d9534f;
}
table tr td .btn.edit {
    background-color: #5cb85c;
}
table tr td .btn.edit:hover {
    color: #fff;
    background-color: #398439;
    border-color: #255625
}
table tr td .btn.del {
    background-color: #d9534f;
}
table tr td .btn.del:hover {
    color: #fff;
    background-color: #c9302c
}
.button {
    font-size: 0;
}
.dialog {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: 0;
    display: none;
}
.dialog.show {
    display: block;
}
.dialog .mask{
    background-color: rgba(0, 0, 0, 0.5);
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: 0;
}
.dialog .dialog-content {
    width: 500px;
    height: 450px;
    background-color: #fff;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-left: -250px;
    margin-top: -225px;
    padding: 10px;
}

.dialog .dialog-content form {
    width: 400px;
    margin: 0 auto;
}