.cul_box {
      width: 1080px;
      margin-left: auto;
      margin-right: auto;
      margin-bottom:0px; }
	  
	  
	  
	  
	  .cul_box ul li:last-child {
        margin-right: 0;
        transition: transform 0.5s 0.6s,opacity 0.5s 0.6s; }.cul_box ul li:nth-child(2) {
        transition: transform 0.5s 0.2s,opacity 0.5s 0.2s; }.cul_box ul li:nth-child(3) {
        transition: transform 0.5s 0.4s,opacity 0.5s 0.4s; }.cul_box ul li {
        float: left;
        width: 20%;
        margin-right: 6.4%; }
        @media (min-width: 1024px) {.cul_box ul li:hover .ico_box .front {
            transform: rotateY(-180deg); }.cul_box ul li:hover .ico_box .back {
            transform: rotateY(0deg); } }.cul_box ul li .ico_box {
          width: 130px;
          height: 130px;
          background: #fff;
          margin-left: auto;
          margin-right: auto;
          border-radius: 50%;
          position: relative;
          perspective: 2000px; }.cul_box ul li .ico_box .front {
            width: 100%;
            border-radius: 50%;
            height: 100%;
            transition: all 0.8s cubic-bezier(0.41, 1.03, 0.94, 1);
            position: absolute;
            left: 0;
            top: 0;
            transform-style: preserve-3d;
            box-shadow: 0 0 10px rgba(19, 19, 19, 0.15);
            backface-visibility: hidden;
            line-height: 130px;
            text-align: center; }.cul_box ul li .ico_box .back {
            width: 100%;
            border-radius: 50%;
            height: 100%;
            position: absolute;
            transition: all 0.8s cubic-bezier(0.41, 1.03, 0.94, 1);
            left: 0;
            top: 0;
            transform: rotateY(-180deg);
            transform-style: preserve-3d;
            backface-visibility: hidden;
            line-height: 130px;
            background: #00969e;
            text-align: center; }.cul_box ul li .cont {
          padding-top: 30px;
          text-align: center; }.cul_box ul li .cont .t {
            font-size: 18px;
            line-height: 28px;
            color: #666; }.cul_box ul li .cont .line {
            width: 36px;
            height: 2px;
            background: #00969e;
            margin-left: auto;
            margin-right: auto;
            margin-top: 10px; }.cul_box ul li .cont .txt {
            padding-top: 10px;
            font-size: 14px;
            line-height: 24px;
            color: #666; }
      @media (max-width: 1300px) {.cul_box {
          width: 94%; } }
      @media (max-width: 1024px) {.cul_box {
          margin-top: 50px; }.cul_box ul li .ico_box {
            width: 110px;
            height: 110px; }.cul_box ul li .ico_box .front,.cul_box ul li .ico_box .back {
              width: 110px;
              height: 110px;
              line-height: 110px; }.cul_box ul li .cont {
            padding-top: 20px; } }
      @media (max-width: 700px) {.cul_box {
          margin-top: 20px; }.cul_box ul li:nth-child(even) {
            float: right; }.cul_box ul li {
            width: 48%;
            margin-right: 0;
            margin-top: 15px; }.cul_box ul li .ico_box {
              width: 110px;
              height: 110px; }.cul_box ul li .ico_box .front,.cul_box ul li .ico_box .back {
                width: 110px;
                height: 110px;
                line-height: 110px; }.cul_box ul li .cont {
              padding-top: 15px; }.cul_box ul li .cont .t {
                font-size: 16px;
                line-height: 26px; }.cul_box ul li .cont .line {
                margin-top: 6px; }.cul_box ul li .cont .txt {
                padding-top: 6px; } }