css hover 鼠标移入放大鼠标离开缩小

.btn_d{
 cursor: pointer; 
}

//hover 时放大
.btn_d:hover{
  animation: move 0.3s ease-in-out   forwards;
 }
  /* 鼠标离开时执行的CSS代码 */
.btn_d:not(:hover) {

  animation: move1 0.3s ease-in-out   forwards;
}

@keyframes move {
    0% {
      transform: scale(1) ;
    }
    100% {
      transform: scale(1.02) ;
    }
  }
  @keyframes move1 {
    0% {
      transform: scale(1.02) ;
    }
    100% {
      transform: scale(1) ;
    }
  }