使用CSS3使按钮弹跳

我希望它能够向上和向下跳到屏幕(Z轴上).

您可以使用关键帧动画来设置按钮缩放比例的动画并使其反弹:

.order {
  position: absolute;
  top: 50px;
  left: 50px;
  width: 75px;
  line-height: 75px;
  text-align:center;
  opacity: 1;
  background: green;
  color:#fff;
  border-radius:50%;
  -webkit-animation: bounce .3s infinite alternate;
  -moz-animation: bounce .3s infinite alternate;
  animation: bounce .3s infinite alternate;
}
@-webkit-keyframes bounce {
  to { -webkit-transform: scale(1.2); }
}
@-moz-keyframes bounce {
  to { -moz-transform: scale(1.2); }
}
@keyframes bounce {
  to { transform: scale(1.2); }
}

Order