.kj-why-cas {
    background: url(../images/casbg3.png) no-repeat;
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
}

.kj-cas-ad {
    background-image: url(../images/casbg2.png);
    background-size: cover;
    background-repeat: no-repeat;
}

.kj-cas-ad-header {
    color: #333;
}

.kj-cas-ad-content {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 55px 0 70px;
}

.kj-cas-ad-content div {
    width: 478px;
    height: 500px;
    background-color: red;
    border-radius: 10px;
    text-align: center;
    font-size: 24px;
    line-height: 58px;
}

.kj-cas-ad-content .kj-cas-ad-content-left {
    background: url(../images/cas-ad-bg1.png) no-repeat;
    background-position: right bottom;
    background-size: 250px 200px;
    background-color: rgba(31, 119, 216, 0.3);
    padding-top: 60px;
}

.kj-cas-ad-content .kj-cas-ad-content-right {
    background: url(../images/cas-ad-bg2.png) no-repeat;
    background-position: center center;
    background-size: 100% 100%;
    position: relative;
    top: 60px;
    padding-top: 160px;
    color: #fff;
}

.kj-cas-header {
    padding-top: 0;
}