[여기] 팝업 만들기

.layer_bg {
    display: none;
    position: fixed;
    left: 0; top: 0;
    z-index: 900;
    width: 100vw;
    height: 100vh;
    background: rgba(0,0,0,0.8);
    }
.layer {
    display: none;
    position: relative;     
    z-index: 1000;
    left: 25vw; top: -70vh;
    width: 50vw;
    height: 50vh;
    border: 3px solid #000;
    background: #fff;
}
.layer p {
    padding: 30px;
    text-align: left;
    line-height: 1.6;
    font-size: 16px;
}
.layer h2 {
    padding: 20px;
    color: #000;
}
.layer .close {
    position: absolute;
    bottom: 20px; 
    right: 20px;
}