.hcs-chat-button{
    position: fixed;
    right: 25px;
    bottom: 25px;
    background: #25D366;
    color: #fff;
    padding: 14px 22px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    z-index: 999999;
    display: inline-block;
    box-shadow: 0 4px 10px rgba(0,0,0,.2);
}

.hcs-chat-popup{
    display: none;
    position: fixed;
    right: 25px;
    bottom: 90px;
    width: 320px;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 10px;
    padding: 15px;
    z-index: 999999;
    box-shadow: 0 4px 15px rgba(0,0,0,.2);
}

.hcs-chat-popup textarea{
    width:100%;
    height:100px;
    margin-bottom:10px;
}

#hcs-send-message{
    width:100%;
    background:#25D366;
    color:#fff;
    border:none;
    padding:10px;
    border-radius:5px;
    cursor:pointer;
}