.w1200{
    width: 1200px;
    margin: 0 auto;
}
.textcenter {
    text-align:center;
}
.pt30 {
    padding-top:29px;
}
.btcbner {
    width: 100%;
    height: 1252px;
    background:url(../images/blockintegrity/itbner.jpg) center 0 no-repeat;
}
.btnimg {
    position: relative;
    text-align: center;
    padding-top: 597px;
}
.btnimg ul {
    position: absolute;
    bottom: 0;
    left: 90px;
    width: 1020px;
    overflow: hidden;
}
.btnimg ul li {
    float: left;
    width: 68px;
    height: 364px;
    margin-right: 37px;
}
.btnimg ul li.li3 {
    margin-right: 40px;
}
.btnimg ul li.li6 {
    margin-right: 41px;
}
.btnimg ul li.li0 {
    margin-right: 0;
}
.btnimg ul li a {
    display: block;
    height: 100%;
    border-radius: 50px;
}
.Preface {
    width: 100%;
    height: 815px;
    background:url(../images/blockintegrity/itb1.jpg) center 0 no-repeat;
}
.Prefaceimg {
    padding-top: 62px;
}
.qklb1 {
    width: 100%;
    height: 1596px;
    background:url(../images/blockintegrity/bd_02.jpg) center 0 no-repeat;
}
.qkimgbox {
    position: relative;
}
.qkimgbox a {
    display: inline-block;
    width: 194px;
    height: 50px;
    position: absolute;
    bottom: 30px;
    left: 50%;
    margin-left: -97px;
}
.qkimgbox36.qkimgbox a {
    bottom: 36px;
}
.qkimgbox40.qkimgbox a {
    bottom: 40px;
}
.qkimgbox34.qkimgbox a {
    bottom: 34px;
}
.qklb2 {
    width: 100%;
    height: 2785px;
    background:url(../images/blockintegrity/bd_03.jpg) center 0 no-repeat;
}
.qklb3 {
    width: 100%;
    height: 2874px;
    background:url(../images/blockintegrity/bd_04.jpg) center 0 no-repeat;
}
.qklb4 {
    width: 100%;
    height: 1302px;
    background:url(../images/blockintegrity/bd_05.jpg) center 0 no-repeat;
}
.yqktxt {
    position: relative;
    padding-top: 95px;
}