.BlockMain{aspect-ratio:auto}.BlockMain__item{position:absolute;top:0;left:0;width:100%;height:100%;opacity:0;-webkit-transition:opacity 2s;transition:opacity 2s}.BlockMain__item:nth-of-type(1){position:static}[data-item="1"] .BlockMain__item:nth-of-type(1),[data-item="2"] .BlockMain__item:nth-of-type(2),[data-item="3"] .BlockMain__item:nth-of-type(3),[data-item="4"] .BlockMain__item:nth-of-type(4),[data-item="5"] .BlockMain__item:nth-of-type(5){opacity:1}.BlockMain__txt{position:absolute}.BlockKnowledge__img{overflow:hidden}.BlockPeople__btn{position:absolute;bottom:0;left:0;width:100%;margin-bottom:-28px}.BlockLife__box{position:relative}.BlockData .el__imgBox__ttl{padding-top:8px}