diff --git a/core/themes/seven/css/dialog.theme.css b/core/themes/seven/css/dialog.theme.css
index 56946f1..f9db078 100644
--- a/core/themes/seven/css/dialog.theme.css
+++ b/core/themes/seven/css/dialog.theme.css
@@ -31,6 +31,7 @@
   margin: 0;
   height: 16px;
   width: 16px;
+  position: absolute;
 }
 .ui-dialog .ui-icon.ui-icon-closethick {
   background: url('../../../misc/icons/ffffff/ex.svg') 0 0 no-repeat;
@@ -41,7 +42,7 @@
 }
 .ui-dialog .ui-widget-content.ui-dialog-buttonpane {
   background: #f5f5f2;
-  border-top: 1px solid #bfbfbf;
+  /*border-top: 1px solid #bfbfbf;*/
   margin: 0;
   padding: 15px 20px;
   border-bottom-left-radius: 5px;
@@ -59,7 +60,6 @@
   position: static;
 }
 
-
 /* Form action buttons are moved in dialogs. Remove empty space. */
 .ui-dialog .ui-dialog-content .form-actions {
   padding: 0;
@@ -72,7 +72,7 @@
   top: 48.5%;
   z-index: 1000;
   background-color: #232323;
-  background-image: url("../loading-small.gif");
+  background-image: url("../../../misc/loading-small.gif");
   background-position: center center;
   background-repeat: no-repeat;
   border-radius: 7px;
diff --git a/core/themes/seven/seven.info.yml b/core/themes/seven/seven.info.yml
index 8974f3d..771f497 100644
--- a/core/themes/seven/seven.info.yml
+++ b/core/themes/seven/seven.info.yml
@@ -14,6 +14,8 @@ stylesheets-override:
   - vertical-tabs.css
   - jquery.ui.theme.css
   - css/dialog.theme.css
+stylesheets-remove:
+  - jquery.ui.dialog.css
 edit_stylesheets:
   - edit.css
 regions: