.popup-close-btn{position:absolute;top:5px;right:5px;width:20px;height:20px;background:#1a2642;border:none;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px rgba(0,0,0,.15);cursor:pointer;z-index:60;transition:colors .3s ease-in-out}.popup-close-btn:hover{background:#2a3d6a}