.container1{
    width: 400px;
    height: 400px;
    background-color: aqua;
    display: flex;
    justify-content: space-around;
    /*
    等分每个内部盒子的间距
    */
    flex-wrap:wrap;
    /* 实现多行显示 */
    align-content: space-around;
    /* 均匀分布项目 */

}
.inter{
    width:120px;
    height: 120px;
    background-color: blue;
}