.flex{
  display: flex;
}
.just-between{
  justify-content: space-between;
}
.just-center{
  justify-content: center;
}
.align-center{
  align-items: center;
}



.blog-center{
  width: 1200px;
  margin: auto;
}
.blog-top{
  border-bottom: 1px solid #CCCCCC;
}
.blog-top .top-title{
  padding-top: 40px;
/* height: 36px; */
font-family: Arial, Arial;
font-weight: 900;
font-size: 36px;
color: #2D78B5;
line-height: 36px;
}
.blog-top .top-text{
  padding: 20px 0 24px;
  font-family: Arial, Arial;
font-weight: 400;
font-size: 24px;
color: #666666;
line-height: 32px;
}
.blog-select{
  padding-top: 15px;
  align-items: end;
}
.blog-select .select-label{

font-family: Arial, Arial;
font-weight: 400;
font-size: 12px;
color: #2D78B5;
line-height: 20px;
margin-right: 8px;
}
.blog-select .concat-btn{
  width: 173px;
height: 42px;
text-align: center;
line-height: 44px;
background: #2D78B5;
border-radius: 4px;
font-weight: 400;
font-size: 16px;
color: #FFFFFF;
}
.blog-select #mySelect{
  width: 260px;
height: 24px;
cursor: pointer;
border-radius: 4px;
border: 1px solid #666666;
font-family: Arial, Arial;
font-size: 12px;
color: #333333;
}
.blog-select #mySelect:focus-visible{
border-color: #4CAFFF;
}

select option{
  width: 259px;
height: 24px;
}

/* 修改选中项的文本颜色 */
select option:checked {
  background-color: #1967d2;
  color: #FFFFFF;
}
.blog-content .option-content{
  padding: 80px 0 ;
  flex-wrap: wrap;
  flex: 4;
}
.blog-content .option-content .item-box{
  width: 285px;
  height: 340px;
  cursor: pointer;
}
.option-content .item-box img{
  width: 285px;
  height: 200px;
}
.option-content .item-box .item-title{
  padding-top: 16px;
  width: 275px;
height: 84px;
font-family: Arial, Arial;
font-weight: 400;
font-size: 20px;
color: #333333;
line-height: 28px;
text-align: left;
font-style: normal;
text-transform: none;
}
.option-content .item-box p{
  font-weight: 400;
  font-size: 14px;
  color: #999999;
  line-height: 16px;
}
.option-content .item-box:hover .item-title{
  color: #2D78B5;
}