#layer_popup{
    display: none;
}
#layer_popup + label {
    display: inline-block;
    padding: 7px 14px;
    background: #000;
    color: #fff;
}
h2 > label {
    cursor:hand
}
#layer_bg{
    display: none;
    position: absolute; /* 시작 지점을 버튼 위, 0픽셀부터 시작하려고 주는 것*/
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5)
}
#popup{
    position: absolute;
    padding: 15px;
    box-sizing: border-box;
    border-radius: 15px;
    width: 600px;
    min-height: 400px;
    max-height: 800px;
    background: #fff;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 7px 7px 5px rgba(0, 0, 0, 0.2); /*x y 번짐 색상*/
}

#popup > #inner{
    max-height: 600px;
    overflow-y:auto;
}
#popup > h2{
    margin-top: 0px;
    margin-bottom: 12px;
}

#popup > h2 > label{
    float: right;
}
#layer_popup:checked + label + #layer_bg{

    display: block;
}