.main-bor{
    margin-top: 50px;
}
.main-bor-menu{
    width: 300px;
}
.main-bor-menu-title{
    width: 100%;
    height: 90px;
    background: #FF722F;
    border-radius: 4px 4px 0px 0px;
    font-family: MicrosoftYaHeiSemibold;
    font-size: 20px;
    color: #FFFFFF;
    line-height: 27px;
    text-align: center;
    line-height: 90px;
}
.main-bor-bor{
    width: 100%;
    
}
.main-bor-bor-item{
    width: 100%;
    height: 60px;
    box-shadow: 0px 0px 4px 0px rgba(0,0,0,0.1);
    text-align: center;
    line-height: 60px;
    font-family: MicrosoftYaHei;
    color: rgba(0,0,0,0.65);
    display: block;
    box-sizing: border-box;
}
.main-bor-bor-item-active{
    border-left: 4px solid #FF722F;
    color: #FF722F;
}
.main-bor-content{
    width: 850px;
}
.main-bor-content-title{
    font-family: MicrosoftYaHeiSemibold;
    text-align: center;
    color: rgba(0,0,0,0.85);
    line-height: 32px;
}
.main-bor-content-course-standard{
    margin-top: 40px;
    flex-wrap: wrap;
}
.main-bor-content-course-standard-item{
    width: calc(100% / 3 - (20px / 3));
    height: 230px;
    background: #FFFFFF;
    border-radius: 4px;
    border: 1px solid #E6E6E6;
    margin-right: 10px;
    margin-bottom: 30px;
    padding: 10px 10px 16px 10px;
    box-sizing: border-box;
}
.main-bor-content-course-standard-item:nth-child(3n - 3){
    margin-right: 0;
}
.main-bor-content-course-standard-item-img{
    width: 100%;
    height: 171px;
    overflow: hidden;
}
.main-bor-content-course-standard-item-img img{
    width: 100%;
    height: 100%;
    transition: all 0.5s;
}
.main-bor-content-course-standard-item-title{
    margin-top: 12px;
    color: #333333;
    line-height: 21px;
    font-family: MicrosoftYaHeiSemibold;
}
.main-bor-content-course-standard-item:hover{
    background: #FF722F;
}
.main-bor-content-course-standard-item:hover .main-bor-content-course-standard-item-img img{
    transform: scale(1.2);
}
.main-bor-content-course-standard-item:hover .main-bor-content-course-standard-item-title{
    color: #fff;
}
.Pages{
    margin-top: 20px;
}
.footer{
    margin-top: 80px;
}