Issue #1828046 by dead_arm: Exposed forms look terrible.

core/modules/views/css/views.base-rtl.css

-.views-exposed-form .views-exposed-widget {
-  float: right; /* RTL */
-}

core/modules/views/css/views.base.css

 .views-exposed-form .views-exposed-widget {
-  float: left; /* LTR */
-}
-
-.views-exposed-form .views-exposed-widget .form-submit {
-  margin-top: 0.5em;
+  display: inline-block;
 }
 
 .views-exposed-form .form-item,
@@ -12,10 +8,6 @@
   margin-bottom: 0;
 }
 
-.views-exposed-widgets {
-  margin-bottom: 0.5em;
-}
-
 /* table style column align */
 .views-align-left {
   text-align: left;