.column_box{
    width: 350px;
    height: 200px;
    background-color: #060939;
    opacity: 0.9;
    color: #fff;
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    text-align: center;
}
.column_title{
    font-family: MicrosoftYaHei-Bold;
	font-size: 48px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 72px;
	letter-spacing: 0px;
    color: #ffffff;
    margin-top: 20px;
}
.column_tab{
    width: 200px;
	height: 51px;
	background-color: #14a3e3;
    margin: 0 auto;
    color: #fff;
    font-size: 18px;
    line-height: 51px;
    cursor:pointer;
    margin-top: 10px;
}
.column_tab span{
    margin-right: 15px;
}
.main-title{
    font-family: MicrosoftYaHei;
	font-size: 48px;
	font-weight: normal;
	font-stretch: normal;
	letter-spacing: 0px;
    color: #000000;
    text-align: center;
    margin: 20px 0;
}
.activity-container{
    width: 100%;
}
.activity_list{
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}
.list_item{
    width: 580px;
    height: 580px;
    cursor: pointer;
}
.item_pic{
    width: 580px;
    height: 420px;
}
.item_pic img{
    width: 100%;
    height: 100%;
}
.item_text .title{
    font-family: MicrosoftYaHei;
	font-size: 24px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 40px;
	letter-spacing: 0px;
    color: #000000;
    margin-top: 20px;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}
.item_text .description{
    font-family: MicrosoftYaHei;
	font-size: 16px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 30px;
	letter-spacing: 0px;
    color: #000000;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}


.showBigImg {
    display: none;
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,.6);
    z-index: 999;
  }
  .showBigImg .closeBigImg {
    position: absolute;
    right: 35px;
    top: 115px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: #000;
    text-align: center;
    line-height: 45px;
    font-size: 45px;
    color: #fff;
    z-index: 9999;
    user-select: none;
  }
  .showBigImg .showBigImgWrap {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
  }
  .showBigImg .showBigImgWrap .allImgBox {
    position: relative;
    width: 100%;
    height: 100%;
  }
  .showBigImg .showBigImgWrap .allImgBox .imgIte {
    float: left;
    width: 100%;
    height: 100%;
    text-align: center;
  }
  .showBigImg .showBigImgWrap .allImgBox .imgIte span {
    display: inline-block;
    width: 0;
    height: 100%;
    vertical-align: middle;
  }
  .showBigImg .showBigImgWrap .allImgBox .imgIte img {
    max-width: 90%;
    max-height: 90%;
    vertical-align: middle;
  }
  .small-img img{
    width: 150px;
  }