#mybutton-img {
    width: 25px !important;
    height: 25px !important;
    max-width: none !important;
  }
#mychat-button{position:fixed;bottom:20px;right:20px;z-index:19999}
#myact-chat-button{border:none;border-radius:50%;box-shadow:0 4px 8px rgba(0,0,0,.1);color:#fff;cursor:pointer;height:50px;width:50px;display:flex;justify-content:center;align-items:center;outline:none;margin-bottom:5px}
#mychat-iframe{width:100%;height:100%}
#mychat-container {
    position: fixed;
    bottom: 85px;
    right: 20px;
    width: 450px;
    height: 625px;
    max-width: 100%;
    max-height: calc(100% - 105px);
    z-index: 19998;
    border: solid;
    border-radius: 10px;
    border-color: gray;
    overflow: hidden;
}

@media only screen and (max-width: 600px) {
    #mychat-container {
        width: 100%;
        height: calc(100% - 30px);
        bottom: 80px;
        right: 0;
        left: 0;
        border-radius: 0;
    }
}
#myact-chat-button:hover{transform:scale(1.1)}
#myact-chat-button.loading{transform:scale(1.4)}