为网站增添一份灵动——CSS打造的精简加载动画

2023-11-07 03:52:02

样式一：流动线条

用纯CSS制作一个类似于加载中常见的环状转圈转圈加载动画。

div.loading1 {
  width: 60px;
  height: 60px;
  margin: 100px auto;
  border-radius: 50%;
  position: relative;
  text-align: center;
}
div.loading1 span {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  position: absolute;
  opacity: 0;
  -webkit-animation: animate 2s linear infinite;
  animation: animate 2s linear infinite;
}
div.loading1 span:nth-child(1) {
  top: 0;
  left: 0;
  -webkit-animation-delay: 0s;
  animation-delay: 0s;
}
div.loading1 span:nth-child(2) {
  top: 0;
  right: 0;
  -webkit-animation-delay: 0.2s;
  animation-delay: 0.2s;
}
div.loading1 span:nth-child(3) {
  bottom: 0;
  right: 0;
  -webkit-animation-delay: 0.4s;
  animation-delay: 0.4s;
}
div.loading1 span:nth-child(4) {
  bottom: 0;
  left: 0;
  -webkit-animation-delay: 0.6s;
  animation-delay: 0.6s;
}
@-webkit-keyframes animate {
  0% {
    opacity: 1;
  }
  25% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
  75% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
@keyframes animate {
  0% {
    opacity: 1;
  }
  25% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
  75% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

样式二：弹性加载

使用类似于橡胶皮筋的弹性效果制作一个动态十足的加载动画。

div.loading2 {
  width: 100px;
  height: 100px;
  margin: 100px auto;
  border: 10px solid #ccc;
  border-radius: 50%;
  animation: animate 2s linear infinite;
}
@keyframes animate {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.2);
  }
  100% {
    transform: scale(1);
  }
}