@media screen and (max-width: 640px) {
  .dsn-widget {
      width: 80px !important;
      height: 80px !important;
  }
}
.dsn-widget {
    width: 120px;
    height: 120px;
    position: fixed;
    bottom: 0;
    right: 0;
    margin: 30px;
    cursor: pointer;
    z-index: 10001;
}