Enforce auto card segment height and top content alignment

styleguide.css

@@ -1866,7 +1866,10 @@ section + section {
 .sg-card-segment {
   display: flex;
   flex-direction: column;
+  height: auto;
   justify-content: flex-start;
+  align-items: stretch;
+  align-content: flex-start;
   padding:
     var(--layout-card-segment-padding-top)
     var(--layout-card-segment-padding-right)