Video: Custom CSS in the Email Message Editor

This video explains how to add custom CSS in the email message editor.

Code Sample in Video

 @media screen and (max-width: 320px) {
     .element-ELEMENT_ID {
         display: none !important;
    }
}
 a {
     color: #40B35E;
     pointer-events:none !important;
     text-decoration: none !important;
}