diff --git a/Views/Slides/Edit.cshtml b/Views/Slides/Edit.cshtml
index da493fb..8a30104 100644
--- a/Views/Slides/Edit.cshtml
+++ b/Views/Slides/Edit.cshtml
@@ -108,11 +108,15 @@
                 paste_data_images: true,
                 paste_webkit_styles: 'all',
                 paste_postprocess: function(editor, args) {
+                    args.node.querySelectorAll('colgroup').forEach(function(cg) { cg.remove(); });
                     args.node.querySelectorAll('*').forEach(function(el) {
                         var tag = el.tagName.toLowerCase();
                         var isTablePart = (tag === 'td' || tag === 'th' || tag === 'table' || tag === 'tr');
                         if (el.style.color && !isTablePart) el.style.color = '#000';
                         if (el.style.backgroundColor && !isTablePart) el.style.backgroundColor = '';
+                        if (tag === 'col' || tag === 'td' || tag === 'th' || tag === 'table') { el.removeAttribute('width'); el.style.width = ''; }
+                        if (tag === 'td' || tag === 'th') { el.style.border = '1px solid #000'; el.style.padding = '6px 10px'; }
+                        if (tag === 'table') { el.style.borderCollapse = 'collapse'; el.removeAttribute('border'); el.removeAttribute('cellspacing'); el.removeAttribute('cellpadding'); }
                     });
                 },
                 valid_styles: {