Fixed #5667 - Remove base option from theme config

components/lib/blockui/style/BlockUIStyle.js

@@ -1,10 +1,29 @@
 import BaseStyle from 'primevue/base/style';
 
+const theme = ({ dt }) => `
+.p-blockui {
+    position: relative;
+}
+
+.p-blockui-mask {
+    border-radius: ${dt('rounded.base')};
+}
+
+.p-blockui-mask.p-component-overlay {
+    position: absolute;
+}
+
+.p-blockui-mask-document.p-component-overlay {
+    position: fixed;
+}
+`;
+
 const classes = {
     root: 'p-blockui'
 };
 
 export default BaseStyle.extend({
     name: 'blockui',
+    theme,
     classes
 });