Image wont float to right

.img{
  margin-top: 5%;
  width: 360px;
  height: 400px;
  float: right;

}

.img{
  margin-top: 5%;
  width: 360px;
  height: 400px;
  float: right;

}

 <img class="img" src="../Assets/game.gif" alt="This is an animated gif image">

 <img class="img" src="../Assets/game.gif" alt="This is an animated gif image">