.header{
    position: fixed;
    top:0;
    z-index: 999;
    background: #63cff6 !important;
    color: #fff;
}
input {-webkit-appearance: none;}
.Logo{
    color: #fff !important;
    font-size: 18px;
}
#ceng{
	width: 100%;height: 100%;background: rgb(204, 204, 204,0.5);position: fixed;z-index: 999;display: none;
}
#ceng #menu{
	width: 50%;height: 100%;background: #3f3f3f;position: fixed;
}
#menu .menu_con{
	width: 80%;margin-left: 10%;margin-top: 50px;float: left;
}
#menu .menu_con .menu_ti{
	width: 100%;height: 40px;line-height: 40px;text-align: center;font-size: 14px;font-weight: bold;color: #fff;
}
#mm{
	position: absolute;top: 12px;left: 15px;
}
#user{
	position: absolute;top: 8px;right: 8px;font-size: 24px;
}
#test2 img{
	width: 100%;height: 180px;
}
.oneMenu{
    width: 100%;
}
.menu-title{
    padding: 10px 10px 10px;
    font-size: 14px;
    line-height: 1;
    background: none;
    position: relative;
    display: block;
    color: #c1c1c1;
}
.transition{
    display: block;
    padding: 3px 20px;
    clear: both;
    font-weight: 400;
    line-height: 1.42857143;
    color: #616161;
    white-space: nowrap;
}
.two{
    display: none;
}
a:hover{
    text-decoration: none;
}
.oneMenu a:hover{
    color: #fff;
}
.menu-title i{
    float: right;
}
.but_menu{
    width: 100%;
    height: 40px;
}
.clas{
    color: #000;
    height: 35px;
    border-bottom: 1px solid #f1f1f1;
    line-height: 35px;
    margin: 4px 10px;
    background: white;
    padding:0 5px;
}

.clas .ke{
    float: left;
    line-height: 30px;
}
.clas .cla{
    width: 25%;
    height: 25px;
    line-height: 25px;
    float: left;
    margin-top: 2px;
    text-align: center;
    color: #fff;
    background: #63cff6;
    border-radius: 5px;
}

/*.clas{
    float: left;
    padding-left: 10px;
    border-color: #63cff6;
    background-color: #63cff6;
    color: #fff;
    width: 100%;
    height: 30px;
    line-height: 30px;
    margin-top: 10px;
}*/

.footer{
    position: fixed;
    bottom: 0;
    width: 100%;
}
.footer a{
    color: #616161;
    background-color: #f5f5f5;
    border-color: #dcdcdc;
    width: 25%;
    float: left;
    border-radius: 0;
}
.btn {
    display: inline-block;
    margin-bottom: 0;
    font-weight: 400;
    text-align: center;
    vertical-align: middle;
    touch-action: manipulation;
    cursor: pointer;
    background-image: none;
    border: 1px solid transparent;
    white-space: nowrap;
    padding: 6px 12px;
    font-size: 14px;
    line-height: 1.42857143;
    border-radius: 4px;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}
.footer .active{
    color: #616161 !important;
    background-color: #e1e1e1 !important;
}
.cla_list{
    width: 100%;
    position: fixed;
    bottom: 0;
    height: 300px;
    overflow: scroll;
    border-top: 1px solid #f1f1f1;
    background: #fcfcfc;
    display: none;
}
.cla_list .tree{
    width: 20%;
    height: 30px;
    line-height: 30px;
    float: left;
    margin-left: 4%;
    margin-top: 5px;
    text-align: center;
    color: #fff;
    background: #63cff6;
    border-radius: 5px;
}
.cla_list .tree a{
    color: #fff;
}
.close{
    display: none;
    position: fixed;
    right: 2px;
    bottom: 300px;
    font-size: 15px;
    width: 20px;
    height: 20px;
    line-height: 20px;
    text-align: center;
    background: rgb(204, 204, 204);
    border-radius: 10px;
    z-index: 9999;
}
.course-list{
    margin:0 10px;
    background: #fefefe;
}
.main{background: #fefefe;}
.category{background: white}
.category_menu{margin:0 10px;background: white;}
.category_main{background: #fefefe;}

.lesson{
    float: left;
    width: 49%;
    margin: 5px 0;
    border-radius: 4px;
    border: 1px solid #f4f4f4;
    background-color: #fff;
    overflow: hidden;
}
.course-list .lesson a{
	width: 100%;height: 100%;display: inline-block;color: #000;
}
.course-list .lesson .content{
	width: 96%;margin-left: 2%;float: left;
}
.lesson:nth-child(even){
    margin-left: 2%;
}
.lesson .images{
    width: 100%;
    overflow: hidden;
    height: 120px;
    text-align: center;
}
.lesson .images img{
    /*width: 100%;*/
    height: 100px;
    margin-top: 10px;
}
.lesson .images1 img{
    /*width: 100%;*/
    min-width: 170px;
    height: 120px;
}
.lesson .title{
    font-size: 14px;
    height: 35px;
    line-height: 35px;
}
.txtc{text-align: center;}

.lesson .see{
    float: right;
    font-size: 12px;
    width: 20%;
    height: 30px;
    line-height: 30px;
    text-align: right;
}
.see_list{color:#666}
.chose{
    color: red !important;
}
.users{
    width: 30%;
    position: fixed;
    right: 5px;
    top: 43px;
    box-shadow: 0 6px 12px rgba(0,0,0,.175);
    background: #fff;
    display: none;
    z-index: 999;
}
.users li{
    width: 100%;
    height: 40px;
    line-height: 40px;
    text-align: center;
}
.users li a{
    color: #616161;
    padding: 10px 20px;
    display: block;
    clear: both;
    font-weight: 400;
    line-height: 1.42857143;
    white-space: nowrap;
}
.mo{
    width: 100%;
    height: 30px;
    line-height: 30px;
    float: left;
    text-align: center;
}
.mo span{
    border: 1px solid #ccc;
    padding: 5px 20px;
    border-radius: 8px;
    color: #000;
}
.tree a.active{color:red !important;text-decoration: underline;}

.footer i{
    display: block;
    text-align: center;
    margin: 0 auto;
}