.popup {
    display: none;
    position: fixed;
    z-index: 1000;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255,255,255, 1);
    overflow-y: auto;
}
.popup > .content {
    
}
.popup .close {
    position: fixed;
    top: var(--default-spacing);
    right: var(--default-spacing);
    z-index: 1000;
    cursor: pointer;
    width: 24px;
    height: 24px;
    background: url('../img/close_white.png') no-repeat;
    background-size: 100%;
}