.whatsapp-chat-overlay-wrapper{position:fixed;bottom:0;right:0;width:100%;z-index:999}.whatsapp-chat-overlay-inner{position:relative;width:100%;display:block}.whatsapp-chat-overlay-inner .whatsapp-chat-overlay-btn{position:relative;margin-left:auto;margin-right:auto;display:block;text-align:center}.whatsapp-chat-overlay-inner .whatsapp-chat-overlay-btn-holder{position:relative;margin-left:auto;margin-right:auto}