tighten up horizontal input and button padding

scss/_variables.scss

@@ -339,7 +339,7 @@ $table-inverse-color:           $body-bg !default;
 // For each of Bootstrap's buttons, define text, background and border color.
 
 $input-btn-padding-y:       .5rem !default;
-$input-btn-padding-x:       1rem !default;
+$input-btn-padding-x:       .75rem !default;
 $input-btn-line-height:     1.25 !default;
 
 $input-btn-padding-y-sm:    .25rem !default;