.animate-picHover {
    animation: picHover 2s;
    animation-iteration-count: 1;
    animation-fill-mode: forwards;
    /* is Webkit */
    -webkit-animation: picHover 2s; 
    -webkit-animation-iteration-count: 1;
    -webkit-animation-fill-mode: forwards;
  }
  
  @keyframes picHover
  {
    from {
      transform: scale(1);
      opacity: 0.8;
    }
    to {
      transform: scale(1.2);
      opacity: 1;
    }
  }
   
  @-webkit-keyframes picHover /* Safari 与 Chrome */
  {
    from {
      transform: scale(1);
      opacity: 0.8;
    }
    to {
      transform: scale(1.2);
      opacity: 1;
    }
  }