.st_icon {
  display: block;
  width: 300px;
  transition: transform 1s;
}
.st_icon img {
  user-drag: none;user-select: none;-moz-user-select: none;-webkit-user-drag: none;-webkit-user-select: none;-ms-user-select: none;
  pointer-events: none;
}
.st_icon:hover {
  transition: transform 0.25s;
  transform: scale(1.25) /*rotate(-180deg)*/;
}