#dvEmail {
    max-height: 0;
    overflow: hidden;
    padding-top: 0;
    padding-bottom: 0;
    margin-top: 0;
    margin-bottom: 0;
    transition: max-height 0.5s ease, padding 0.5s ease, margin 0.5s ease;
}


    #dvEmail.show {
        max-height: 200px; 
        padding-top: 0.15rem;
        padding-bottom: 0.15rem;
        margin-top: 0.15rem;
        margin-bottom: 0.15rem;
    }

#ddlSubscribeGroup{
    max-height: 40px;
}