html,body{
    padding: 0;
    margin: 0;
    width: 100%;
    zoom: 90%;
}
tbody{
    height: 100%;
}

a{
    color: #666666;
    font-size: 18px;
}
tr{
    height: 100%;
}
#tr_center{
    height: 100%;
}

/*圆角边框*/
.radiusDemo
{
    /*border: 1px solid #e6e6e6;*/
    border-radius: 5px;
    -moz-border-radius: 5px;
    -ms-border-radius: 5px;
    -o-border-radius: 5px;
    -webkit-border-radius: 5px;
}

#logo_nav{
    display: flex;
    margin-top: 31px;
    justify-content: center;
    margin-bottom: 40px;
}
.nav-pills>li.active>a, .nav-pills>li.active>a:focus, .nav-pills>li.active>a:hover{
    background-color: transparent !important;
    color: #269F69;
}
.nav-pills>li.active>a{
    color: #269F69;
}
.nav-pills>li+li{
    margin-left: 100px !important;
}
.nav>li>a:focus, .nav>li>a:hover{
    background-color: transparent !important;
}
.nav-pills>li.active>a{
    border-bottom: 1px solid #269F69;
}
.nav>li>a{
    flex-shrink: 0;
    display: inherit;
    padding: 2px 15px !important;
}
.input-group{
    margin-bottom: 24px;
    height: 56px;
    border-radius: 25px;
    background: #FFFFFF;
    border: 2px solid #EDEDED;
    width: 100%;
    display: flex;
    align-items: center;
    padding-right: 10px;
}
.input-group .CheckCode{
    display: flex;
    align-items: center;
    width: 100%;
}
.input-group-addon-self{
    width: 66px;
    height: 56px;
    display: flex;
    justify-content: center;
    align-items: center;

}
.input-group-addon-self img{
    width: 18px;
    height: 18px;
    background: transparent;
}
/*边框阴影*/
.box-shadowDemo
{
    box-shadow: 2px 2px 1px gray;
}

#center > a:hover
{
    text-decoration: none;
    color: #fff;
    border-color: #fff;
}
#header
{
    height: 100px;
    background-color: #e6e6e6;
    text-align: left;
}
.td_left_backgroupimg{
    display: none;
}

#logo-img
{
    padding-top: 18px;
    float: left;
}
#logo-welcome
{
    font-size: 20px;
    color: #117e50;
    font-family: 微软雅黑;
    padding-top: 30px;
}

#center
{
    position: relative;
    height: 100%;
    width: 100%;
}
#MarkingExperienceEntry
{
    display: none;
}
#Instructions
{
    display: none;
}

#ReportDemo
{
    display: none;
}
#BrowersDownload
{
    display: none;
}
#div_teacher
{
    display: none;
}
#div_login
{
    margin-left: auto;
    margin-right: auto;
    width: 320px;
    height: auto; /* position: absolute;*/
    /*background-color: #e6e6e6;*/
    text-align: center;
    margin-top: 80px;
}
#div_login .title img{
    width: 100%;
}
#logo_nav li
{
    font-size: 16px;
    font-family: 微软雅黑;
}
.login-input
{
    width: 260px;
    height: 30px;
    border: 0;
    box-shadow: none;
    padding-left: 0;
}
.input_addon
{
    margin: 0px;
    padding: 0px;
    width: 15px;
    height: 15px;
}
.nav-item
{
    border: 2px solid #7ac5a2;
    color: #7ac5a2;
    text-decoration: none;
    z-index: 99997;
    position: absolute;
    text-align: center;
    word-wrap: break-word;
}
#footer
{
    vertical-align: middle;
    height: 30px;
    text-align: center;
    background-color: #e6e6e6;
}
#footer span
{
    font-size: 14px;
    color: #117e50;
    font-family: 微软雅黑;
}
.error_msg
{
    color: Red;
    font-size: 10px;
    width: 260px;
    margin: 6px auto 6px auto;
    height: 20px;
    text-align: center;
}
.btn-login
{
    width: 100%;
    margin: 0;
    padding: 0;
}
#tr_center{
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    flex: 1;
    /*position: relative;*/
    justify-content: center;
}

#tr_center .bottom {
    position: absolute;
    width: 100%;
    bottom: 0;
    left: 0;
    display: flex;
    justify-content: center;
    background: #f2f2f2;
    padding: 10px 0;
    flex-direction: column;
    align-items: center;
    height: 140px;
}
#tr_center .bottom .mobile{
    display: flex;
    flex-direction: column;
    align-items: center;
}
#tr_center .bottom .mobile span{
    display: block;
}
#tr_center .bottom .mobile span:nth-child(2){
    margin-top: 8px;
}
#tr_center .bottom div{
    margin-left: 20px;
    margin-top: 8px;
}
#tr_center .bottom span, #tr_center .bottom a{
    font-size: 14px;
    color: #918080;
}