Edit css style of comment-list

src/app/comment-list/comment-list.component.scss

@@ -7,6 +7,11 @@ button {
   min-width: 800px;
 }
 
+mat-card:hover {
+  box-shadow: 0 6px 6px 6px rgba(0,0,0,.2), 0 6px 6px 0 rgba(0,0,0,.14), 0 6px 6px 0 rgba(0,0,0,.12) !important;
+  transition: background .4s cubic-bezier(.25,.8,.25,1),box-shadow 300ms cubic-bezier(.3,0,.2,1);
+}
+
 .not-check-icon {
   color: red;
   position: absolute;
@@ -44,4 +49,5 @@ button {
   text-align: right;
   font-size: 80%;
   margin-right: 10px;
+  margin-bottom: 3px;
 }