/* затемнение */
 #ajaxOverlay {
 position: fixed;
 inset: 0;
 background: rgba(0, 0, 0, 0.55);
 display: none;
 align-items: center;
 justify-content: center;
 z-index: 999;
 }

 /* окно */
 #ajaxModal {
 background: white;
 padding: 20px;
 max-width: 400px;
 border-radius: 10px;
 box-shadow: 0 0 20px rgba(0, 0, 0, .4);
 animation: fadeIn .25s ease;
 }

 @keyframes fadeIn {
 from { opacity: 0; transform: scale(.8); }
 to { opacity: 1; transform: scale(1); }
 }

 #closeModal {
 cursor: pointer;
 font-size: 18px;
 position: absolute;
 top: 15px;
 right: 20px;
 }