[CSS] Added a top margin for buttons.

public/assets/default_theme/css/pages/feeds.css

@@ -258,11 +258,6 @@ embed header {
     mask-image: url("../../icons/delete.svg");
 }
 
-#add_favourite,
-#remove_favourite {
-    margin-top: var(--smaller);
-}
-
 .note-content {
     display: -webkit-box;
     display: -webkit-flex;

public/assets/default_theme/css/widgets/buttons.css

@@ -122,6 +122,7 @@ button {
     -ms-flex-item-align: end !important;
     -ms-grid-row-align: end !important;
     align-self: end !important;
+    margin-top: var(--smaller);
 }
 
 button,label {

public/assets/default_theme/css/widgets/sections.css

@@ -127,6 +127,10 @@
     margin-bottom: var(--smaller);
 }
 
+.form-group:last-of-type {
+    margin-bottom: unset;
+}
+
 .form-group textarea {
     height: 7rem;
     max-height: 100%;