div {

  width: 300px;

  height: 200px;

  background-color: orange;

  margin: 20px auto;

  -webkit-transition-property: height,border-radius;

  transition-property: height,border-radius;

  -webkit-duration: 1s;

  transition-duration: 1s;

  -webkit-transition-timing-function: ease-out;

  transition-timing-function: ease-out;

  -webkit-transition-delay: .2s;

  transition-delay: .2s;

}

div:hover {

  height: 100px;

  border-radius:50px;

}

同时改变多个属性 用，号隔开