.t_nav{position:fixed;top:0;left:0; width:100%;z-index:9999; background-color: #fff;font-size: 30rpx  }
.tab{ font-size:18rpx; position: relative }
.tb_con{
    position: absolute; bottom: 0; right: 10rpx; display: flex;
}
.contant{ display: flex; justify-content: center; align-items: center; width: 100%; position: relative }
.gback{
    position: absolute; left: 24rpx;  width: 17rpx; height: 37rpx;overflow: hidden;
}

.rote_view{
    width: 24rpx; height: 24rpx; margin-left: 6rpx; margin-top: 6rpx;
    transform: rotate(45deg);
}

.ellip{
    max-width: 300rpx;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}