.tab{
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  border-bottom: 1px solid #DDD;
  height: 80rpx;
  box-sizing: border-box;
  background: #fff;
  z-index: 1000;
}
.tab-box{
  flex: 1;
  text-align: center;
  font-size: 34rpx;
  line-height: 80rpx;
}
.tab-box.active{
  color: dodgerblue;
}
.content{
  padding: 20rpx;
  margin-top: 80rpx;
}
.community-name{
  font-size: 32rpx;
  line-height: 80rpx;
}
.intro{
  line-height: 60rpx;
}
.grid-box{
  display: flex;
  justify-content: space-between;
  margin-bottom: 20rpx;
  box-shadow: 0px 2px 8px 0px rgba(35, 24, 21, 0.1);
  padding: 20rpx;
}
.grid-box image{
  width: 120rpx;
}
.grid-info{
  width: 520rpx;
}
.grid-name{
  font-size: 34rpx;
}
.grid-text{
  font-size: 30rpx;
}
.knowledge{
  padding: 20rpx;
  margin-top: 80rpx;
}
.knowledge-box{
  display: flex;
  justify-content: space-between;
  box-shadow: 0px 2px 8px 0px rgba(35, 24, 21, 0.1);
  padding: 20rpx;
  border-radius: 10rpx;
  margin-bottom: 20rpx;
}
.knowledge-box image{
  width: 220rpx;
  height: 156rpx;
  border-radius: 10rpx;
}
.knowledge-info{
  width: 420rpx;
}
.knowledge-title{
  font-size: 34rpx;
  color: #000;
  font-weight: bold;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.summary{
  font-size: 28rpx;
  color: #999;
  line-height: 40rpx;
  overflow: hidden;
  margin: 15rpx 0; 
}
.bind{
  display: inline-block;
  color: #fff;
  background: #4169E1;
  padding: 5rpx 10rpx;
  border-radius: 10rpx;
}