@keyframes ani-tip{
  0% { transform: scale(1.2) translate(0,0); }
  100% { transform: scale(0.8) translate(0,-8px); }
}
.ani-tip {
   width:14px;height:14px;
   border-radius:50%;
   border:none;
   display:inline-block;
   position:absolute;
   left:50%;top:742px;
   box-shadow:0 0 20px #b8e8fe;
  
  cursor:pointer;
  animation-name: ani-tip;
  animation-duration:1s;
  animation-iteration-count:infinite;
  animation-delay: 1s;
  animation-direction: alternate ;
  animation-timing-function: linear;
}