.banner {
    position: relative;
    height: 85vh;
}
.banner video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.banner .centerBox {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}
.banner .centerBox p {
    font-size: 36px;
    color: #FFFFFF;
    text-align: center;
}
.banner img {
    display: none;
}
/* box1 */
.box1 .container-fluid {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
.box1 .bigRow {
    width: 90%;
    height: 100%;
}
/* left */
.box1 .left svg {
    font-size: 30px;
    margin-right: 3%;
}
.box1 .svgRow p {
    margin: 0;
}
.box1 .btCont svg {
    visibility: hidden;
}
.box1 .svgRow {
    display: flex;
    align-items: center;
    margin-bottom: 1%;
}
.box1 .left {
    display: flex;
    justify-content: center;
    flex-direction: column;
    padding-left: 10%;
}

.box1 .left .one {
    margin-bottom: 5%;
}
.box1 .left .bigTit {
    font-size: 26px;
    font-weight: 600;
}
.box1 .left .smTit {
    font-size: 22px;
}
/* btBox */
.box1 .btRow {
    width: 85%;
}
.box1 .btRow .bigTit {
    font-size: 32px;
}
.box1 .btBox {
    width: 100%;
    position: relative;
}
.box1 .btBox::after {
    content: "";
    position: absolute;
    width: 100%;
    height: 40%;
    background: #65D7E6;
    bottom: 0;
    left: 0;
    z-index: -1;
}
.box1 .btBox .bigTit {
    display: inline-block;
}
.box1 .btBox i {
    font-size: 52px;
    font-weight: 600;
    color: rgba(18, 150, 219, 1);
    padding: 0 5%;
}

/* right */
.box1 .right {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
}
.box1 .right img {
    width: 80%;
    height: 90%;
}



/* questionOne */
.box2 {
    height: 100vh;
    background: url(../../resources/images/edu-imgs/box2bg0.png) no-repeat;
    background-size: 100% 100%;
}
.box2 p {
    text-align: justify;
}

.box2 .container-fluid,
.box2 .container-fluid .row,
.box2 .container-fluid .row .col-md-3 {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}

.box2 .bigTit {
    position: absolute;
    left: 10%;
    padding-top: 3%;
}
.box2 .smTit {
    font-size: 32px;
    color: rgba(18, 150, 219, 1);
    font-weight: 400;
}
.box2 .thinkTit {
    font-size: 32px;
    font-weight: 600;
}
.box2 .thinkCont {
    font-size: 20px;
    text-align: justify;
    width: 40%;
}

.box2 .col-md-3:hover {
    background: rgba(255, 255, 255, 0.6);
}
/* bigBox backgroud */
.box2 .bigOne {
    background: url(../../resources/images/edu-imgs/child1.png) no-repeat;
}
.box2 .bigTwo {
    background: url(../../resources/images/edu-imgs/child2.png) no-repeat;
}
.box2 .bigThree {
    background: url(../../resources/images/edu-imgs/child3.png) no-repeat;
}
.box2 .bigFour {
    background: url(../../resources/images/edu-imgs/child4.png) no-repeat;
}
/* bigBox backgroud end*/
.box2 .topBox {
    font-size: 22px;
    font-weight: 600;
}
.box2 .smBox {
    width: 80%;
    font-size: 20px;
}

/* 祖父 */
.box2 .col-md-3 {
    position: relative;
    overflow: hidden;
}
/* 父级 */
.box2 .col-md-3 .bigBox {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    position: relative;
    width: 100%;
    height: 100%;
    background-size: 30%;
    background-position: 50% 40%;
}
/* 子1 */
.topBox {
    position: absolute;
    top: 25%;
}
/* 子2 */
.smBox {
    position: absolute; 
    width: 80%;
    margin-top: 30%;  
    height: 8%;  
    display: none;
}
.smBox p {
    line-height: 2.25rem;   
}
.box2 .col-md-3:hover .smBox {  
    display: block;
}

/* button */
.box3 {
    display: flex;
    justify-content: end;
    padding: 2% 0;
    padding-right: 10%;
}


.button .more {
    width: 150px;
    height: 50px;
    background-color: rgba(18, 150, 219, 1);
    color: white;
    font-size: 16px;
    border: 0;
    border-radius: 5px;
    transition: transform .2s;
}
.more:hover{
    transform: scale(1.05);
}

.box2-phone {
    display: none;
}