Ensure Card can overflow container

Author: philippjfr

panel/styles/models/card.less

@@ -3,7 +3,6 @@
   box-shadow:
     rgba(50, 50, 93, 0.25) 0px 6px 12px -2px,
     rgba(0, 0, 0, 0.3) 0px 3px 7px -3px;
-  flex: auto;
   outline: 1px solid rgba(0, 0, 0, 0.125);
 }