.pop{
    display:none;
}
.pop_bakground{
    display: flex;
    width: 100vw;
    height: 100vh;
    justify-content: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.70);
    position: fixed;
    top:0;
    left:0;
    align-items: center;    /* 세로 중앙 */
  justify-content: center;/* 가로 중앙 */
  z-index:9;
}