Tiny padding tweaks.

misago/static/misago/admin/css/misago/alerts.less

@@ -11,7 +11,7 @@
     border-bottom: 6px solid fadeOut(#000, 85%);
     border-radius: 0;
     margin-bottom: 0px;
-    padding: @line-height-computed 0px;
+    padding: (@line-height-computed * 0.8) 0px;
 
     font-size: @font-size-large;
 

misago/static/misago/admin/css/style.css

@@ -5789,7 +5789,7 @@ body {
   border-bottom: 6px solid rgba(0, 0, 0, 0.15);
   border-radius: 0;
   margin-bottom: 0px;
-  padding: 20px 0px;
+  padding: 16px 0px;
   font-size: 18px;
 }
 .misago-alerts .alert .alert-icon {

uiframework/misago/admin/css/misago/alerts.less

@@ -11,6 +11,7 @@
     border-bottom: 6px solid fadeOut(#000, 85%);
     border-radius: 0;
     margin-bottom: 0px;
+    padding: (@line-height-computed * 0.8) 0px;
 
     font-size: @font-size-large;