.index-course-box{
    width: 1920px;
    max-width: 100%;
    display: block;
    margin: 0 auto;
    position: relative;
}
.index-course-all-box{
    width: 1300px;
    max-width: 100%;
    display: block;
    margin: 0 auto;
    position: relative;
    font-size: 0;
    box-sizing: border-box;
    padding: 30px 0;
}
.index-course-title-box{
    text-align: center;
    margin-top: 20px;
}
.index-course-title-box h2{
    font-size: 32px;
    font-weight: bold;
    letter-spacing: 1px;
    color: #93221b;
    line-height: 40px;
    transform: skewX(-10deg);
}
.index-course-info-box{
    margin-top: 25px;
}
.index-course-info{
    width: 400px;
    height: 200px;
    border-radius: 5px;
    display: inline-block;
    vertical-align: top;
    background-color: #f5f5f5;
    box-sizing: border-box;
    padding: 10px; 
    position: relative;
    margin-right: 50px;
    cursor: pointer;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
}
.index-course-info:nth-child(3n){
    margin-right: 0;
}
.index-course-info:nth-child(n + 4){
    margin-top: 50px;
}
.index-course-info-border-box{
    width: 100%;
    height: 100%;
    display: block;
    position: relative;
    box-sizing: border-box;
    padding: 0 30px;
    border-radius: 5px;
    transition: all .3s linear;
}
.index-course-info-border{
    width: 100%;
    height: 100%;
    border: 1px solid #ddd;
    box-sizing: border-box;
    border-radius: 5px;
    position: absolute;
    top: 0;
    left: 0;
}
.index-course-info-text-box{
    width: 100%;
    height: 100%;
    display:         flex;
    display: -webkit-flex;
    justify-content: center;
    -webkit-justify-content: center;
    flex-direction: column;
    border-radius: 5px;
    position: relative;
    box-sizing: border-box;
    background-color: #f5f5f5;
    padding: 0 30px;
    z-index: 1;
    background-repeat: no-repeat;
    background-size: 0%;
    background-position: center;
    transition: all .3s linear;
}
.index-course-info-text-ch{
    font-size: 18px;
    color: #000;
    letter-spacing: 0.06em;
    font-weight: bold;
    line-height: 30px;
    text-align: center;
}
.index-course-info-text-en{
    font-size: 16px;
    color: #555;
    font-weight: lighter;
    letter-spacing: 0.03em;
    line-height: 30px;
    text-align: center;
}
.index-course-info .index-course-info-text-en{
    text-align: justify;
}
.index-course-info-text-icon{
    width: 100%;
    height: 100%;
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: all .3s linear;
}
.index-course-info:hover .index-course-info-text-box{
    background-color: #f5a425;
}
.index-course-info:hover .index-course-info-border-box{
    background-color: #f5a425;
}
.index-course-info:hover .index-course-info-border{
    display: none;
}
.index-course-info:hover .index-course-info-text-icon{
    opacity: 0.1;
}
.index-course-info:hover .index-course-info-text-ch,
.index-course-info:hover .index-course-info-text-en{
    color: #fff;
}


.index-style-info{
    width: 400px;
    height: 200px;
    border-radius: 5px;
    display: inline-block;
    vertical-align: top;
    box-sizing: border-box;
    padding: 10px; 
    position: relative;
    margin-right: 50px;
    cursor: pointer;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
}
.index-style-info:nth-child(3n){
    margin-right: 0;
}
.index-style-info:nth-child(n + 4){
    margin-top: 50px;
}
.index-style-info-text-box{
    width: 100%;
    height: 100%;
    display:         flex;
    display: -webkit-flex;
    justify-content: center;
    -webkit-justify-content: center;
    flex-direction: column;
    position: relative;
    box-sizing: border-box;
    padding: 0 15px;
    border-radius: 5px;
    transition: all .3s linear;
    background-color: rgba(245,245,245,0.9);
    opacity: 1;
}
.index-style-info-text-ch{
    font-size: 18px;
    color: #000;
    letter-spacing: 0.06em;
    font-weight: bold;
    line-height: 30px;
}
.index-style-info-text-en{
    font-size: 14px;
    color: #555;
    letter-spacing: 0.03em;
    line-height: 30px;
    margin-top: 5px;
}
.index-style-info:hover .index-style-info-text-box{
    opacity: 0;
}



@media only screen and (max-width: 1300px){
    .index-course-all-box{
        width: 1200px;
    }
    .index-course-info{
        width: 380px;
        margin-right: 30px;
        margin-bottom: 30px;
        height: 190px;
    }
    .index-style-info{
        width: 380px;
        height: 190px;
        margin-right: 30px;
    }
}
@media only screen and (max-width: 1200px){
    .index-course-all-box{
        width: 1000px;
    }
    .index-course-info{
        width: 320px;
        height: 200px;
        margin-right: 20px;
        margin-bottom: 20px;
    }
    .index-course-info-text-box{
        padding: 0 10px;
    }
    .index-style-info{
        width: 320px;
        height: 160px;
        margin-right: 20px;
    }
}
@media only screen and (max-width: 1000px){
    .index-course-all-box{
        width: 750px;
    }
    .index-style-info{
        width: 365px;
        margin-right: 20px;
        height: 182.5px;
    }
    .index-style-info:nth-child(n) {
        margin-right: 20px;
    }
    .index-style-info:nth-child(2n) {
        margin-right: 0;
    }
    .index-course-info{
        width: 550px;
        height: 275px;
        display: block;
    }
    .index-course-info:nth-child(n){
        margin: 0 auto;
        margin-bottom: 20px;
    }
    .index-style-info:nth-child(n + 4) {
        margin-top: 0;
}
}
@media only screen and (max-width: 750px){
    .index-course-all-box{
        width: 550px;
    }
    .index-course-title-box h2 {
        font-size: 26px;
        line-height: 36px;
    }
    .index-style-info{
        width: 265px;
        height: 132.5px;
    }
    .index-course-info-text-box{
        padding: 0 10px;
    }
    .index-course-info-box{
        margin-top: 25px;
    }
    .index-style-info-text-box{
        opacity: 1;
    }
    .index-course-info-text-ch{
        font-size: 16px;
    }
    .index-course-info-text-en{
        font-size: 14px;
    }
}
@media only screen and (max-width: 550px){
    .index-course-all-box{
        width: 400px;
    }
    .index-course-title-box h2 {
        font-size: 20px;
        line-height: inherit;
    }
    .index-course-info:nth-child(n){
        width: 100%;
        margin-right: 0;
        margin-bottom: 20px;
        height: inherit;
    }
    .index-style-info:nth-child(n){
        margin-right: 0;
        margin-bottom: 15px;
    }
    .index-course-info-text-box{
        padding: 10px;
    }
    .index-style-info{
        width: 100%;
        height: 200px;
    }
    .index-course-info-text-ch{
        font-size: 14px;
    }
    .index-course-info-text-en{
        font-size: 12px;
    }
    .index-course-info-text-icon{
        display: none;
    }
    .index-style-info-text-ch{
        font-size: 14px;
    }
    .index-style-info-text-en{
        font-size: 12px;
    }
}
@media only screen and (max-width: 400px){
    .index-course-all-box{
        width: 300px;
        padding: 10px 0;
    }
    .index-course-title-box h2 {
        font-size: 16px;
    }
    .index-course-info:nth-child(n){
        width: 100%;
        margin-bottom: 10px;
    }
    .index-style-info:nth-child(n){
        width: 100%;
        height: 150px;
        margin-bottom: 10px;
    }
    .index-course-title-box{
        margin-top: 0;
    }
    .index-course-info-box{
        margin-top: 10px;
    }
    .index-style-info-text-ch{
        line-height: 20px;
    }
    .index-style-info-text-en{
        line-height: 20px;
    }
}




@media only screen and (min-width: 1000px){
    .index-course-title-box h2,
    .index-course-info,
    .index-style-info{
        opacity: 0;
    }
    .index-course-title-box.anima h2{
        animation: fadeInDown 1s ease 0s 1 both;
    }
    .index-course-info.anima,
    .index-style-info.anima{
        animation: fadeInUp 1s ease 0s 1 both;
    }
}