Add styling for OpeningHoursSkeleton

DDFFORM-417

base.scss

@@ -134,6 +134,7 @@
 @import "./src/stories/Library/material-grid/material-grid";
 @import "./src/stories/Library/error-message/error-message";
 @import "./src/stories/Library/opening-hours/opening-hours";
+@import "./src/stories/Library/opening-hours/opening-hours-skeleton";
 
 // Autosuggest block styling needs to be loaded before the rest of the scss for autosuggest
 @import "./src/stories/Blocks/autosuggest/autosuggest";

src/stories/Library/opening-hours/opening-hours-skeleton.scss

@@ -0,0 +1,13 @@
+.opening-hours {
+  .ssc-line {
+    height: $s-xl;
+  }
+  .ssc-line--odd {
+    opacity: 0.5;
+  }
+  .ssc-line-headline {
+    height: 26px;
+    margin-bottom: $s-md;
+    width: 100px;
+  }
+}