Fix responsive fluid step

dist/components/step.css

@@ -295,6 +295,7 @@
             flex-direction: column;
   }
   .ui.steps .step {
+    width: 100% !important;
     -webkit-box-orient: vertical;
     -webkit-box-direction: normal;
     -webkit-flex-direction: column;

dist/semantic.css

@@ -15190,6 +15190,7 @@ ol.ui.horizontal.list li:before,
   }
 
   .ui.steps .step {
+    width: 100% !important;
     -webkit-box-orient: vertical;
     -webkit-box-direction: normal;
     -webkit-flex-direction: column;

src/definitions/elements/step.less

@@ -258,6 +258,7 @@
   flex-direction: column;
 }
 .ui.steps .step {
+  width: 100% !important;
   flex-direction: column;
   border-radius: @borderRadius;
   padding: @verticalPadding @horizontalPadding;