[ticket/10270] Added jQuery popup CSS to the ACP.

It was missing previously, meaning that it displayed wrong and in the
footer.

PHPBB3-10270

phpBB/adm/style/admin.css

@@ -1070,6 +1070,40 @@ input.disabled {
 	color: #666666;
 }
 
+/* jQuery popups
+---------------------------------------- */
+.jalert {
+	background-color: #FFFFFF;
+	border: 1px solid #999999;
+	position: fixed;
+	display: none;
+	top: 100px;
+	left: 35%;
+	width: 30%;
+	z-index: 50;
+	padding: 25px;
+	padding: 0 25px 20px 25px;
+}
+
+.jalert p {
+	margin: 8px 0;
+	padding-bottom: 8px;
+}
+
+#darkenwrapper {
+	display: none;
+}
+
+#darken {
+	position: fixed;
+	left: 0;
+	top: 0;
+	width: 100%;
+	height: 100%;
+	background-color: #000000;
+	opacity: 0.5;
+}
+
 /* Pagination
 ---------------------------------------- */
 .pagination {