html - 使用 CSS3 制作按钮弹跳

Question

我正在尝试使用 CSS3 使这个按钮弹跳

.order {
  position: absolute;
  top: 50px;
  left: 50px;
  width: 75px;
  line-height: 75px;
  text-align:center;
  opacity: 1;
  background: green;
  color:#fff;
  border-radius:50%;
}

<div class="order">Order</div>

我希望它朝屏幕(在 Z 轴上)上下弹跳。

Answer 1

您可以使用关键帧动画来设置按钮的缩放比例并使其反弹:

.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); }
}

<div class="order">Order</div>

迭代次数:

如果你想在多次“反弹”后停止动画，你可以使用animation-iteration-count(使用偶数次迭代否则动画会在最后停止):

.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-animation-iteration-count: 8;
  -moz-animation-iteration-count: 8;
  animation-iteration-count: 8;
}
@-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); }
}

<div class="order">Order</div>