用于重复闪烁效果的 CSS 关键帧(wifi)

Question

所以我正在尝试为元素创建 Wifi 闪烁效果。首先圆圈应该是可见的，然后是上面的圆圈，依此类推。在所有符号都可见后，它应该等待 2 秒，然后重新开始。你可以在这里看到我的当前状态:

http://jsfiddle.net/6jhgfdv0/

我用的css是

animation: blink 3s infinite;
animation-delay: 1s;

和

@keyframes blink {
    0% {opacity: 0}
    49%{opacity: 0}
  50%{opacity: 1}
}

我想只改变延迟和其他值我可以让它看起来像那样，但它不起作用。我做错了什么？

body {
  margin: 0;
  padding: 0;
}
  
  #body {
    margin: 200px auto 0px;
    width: 280px;
    height: 84px;
    background-color: #c9e3ed;
    border-radius: 30px 30px 10px 10px / 20px 20px 10px 10px;
    position: relative;
 }
      
 #wifi .signal {
    border-right: 12px solid #ee7230;
    border-bottom: 12px solid #ee7230;
    border-top: 1px solid #fff;
    border-left: 1px solid #fff;
    transform: rotate(-135deg);
    position: absolute;
}
  
 #wifi .signal:first-child {
	left: 50%;
	top: -160px;
	margin-left: -56px;  
	width: 100px;
	height: 100px;
	border-radius: 0 0 100px 0;
	animation: blink 3s infinite;
	animation-delay: 1s;
}

 #wifi .signal:nth-child(2) {
	left: 50%;
	top: -130px;
	margin-left: -43px;  
	width: 74px;
	height: 74px;
	border-radius: 0 0 74px 0;
	animation: blink 3s infinite;
	animation-delay: 2s;
	}   
  
 #wifi .signal:last-child {
	left: 50%;
	top: -100px;
	margin-left: -30px;  
	width: 48px;
	height: 48px;
	border-radius: 0 0 48px 0;
	animation: blink 3s infinite;
	animation-delay: 3s;
}

 #wifi .signal:last-child:after {
	content: '';
	position: absolute;
	right: 35%;
	bottom: 35%;
	height: 30px;
	width: 30px;
	background-color: #ee7230;
	border-radius: 50%;
	margin-left: -25px;
	animation: blink 3s infinite;
	animation-delay: 4s;
}


@keyframes blink {
	0% {opacity: 0}
	49%{opacity: 0}
  50%{opacity: 1}
}

<div id="router">
  <div id="body">
    <div id="wifi">
      <div class="signal"></div>
      <div class="signal"></div>
      <div class="signal"></div>
    </div>
  </div>
</div>

Answer 1

创建多个动画，每个动画将以不同的百分比开始动画，然后您可以跳过动画延迟。

body {
  margin: 0;
  padding: 0;
}

#body {
  margin: 200px auto 0px;
  width: 280px;
  height: 84px;
  background-color: #c9e3ed;
  border-radius: 30px 30px 10px 10px / 20px 20px 10px 10px;
  position: relative;
}

#wifi .signal {
  border-right: 12px solid #ee7230;
  border-bottom: 12px solid #ee7230;
  border-top: 1px solid #fff;
  border-left: 1px solid #fff;
  transform: rotate(-135deg);
  position: absolute;
}

#wifi .signal:first-child {
  left: 50%;
  top: -160px;
  margin-left: -56px;
  width: 100px;
  height: 100px;
  border-radius: 0 0 100px 0;
  animation: blink4 4s infinite;
}

#wifi .signal:nth-child(2) {
  left: 50%;
  top: -130px;
  margin-left: -43px;
  width: 74px;
  height: 74px;
  border-radius: 0 0 74px 0;
  animation: blink3 4s infinite;
}

#wifi .signal:last-child {
  left: 50%;
  top: -100px;
  margin-left: -30px;
  width: 48px;
  height: 48px;
  border-radius: 0 0 48px 0;
  animation: blink2 4s infinite;
}

#wifi .signal:last-child:after {
  content: '';
  position: absolute;
  right: 35%;
  bottom: 35%;
  height: 30px;
  width: 30px;
  background-color: #ee7230;
  border-radius: 50%;
  margin-left: -25px;
  animation: blink1 4s infinite;
}

@keyframes blink1 {
  0% {
    opacity: 0
  }
  19% {
    opacity: 0
  }
  20% {
    opacity: 1
  }
}

@keyframes blink2 {
  0% {
    opacity: 0
  }
  39% {
    opacity: 0
  }
  40% {
    opacity: 1
  }
}

@keyframes blink3 {
  0% {
    opacity: 0
  }
  59% {
    opacity: 0
  }
  60% {
    opacity: 1
  }
}

@keyframes blink4 {
  0% {
    opacity: 0
  }
  79% {
    opacity: 0
  }
  80% {
    opacity: 1
  }
}

<div id="router">
  <div id="body">
    <div id="wifi">
      <div class="signal"></div>
      <div class="signal"></div>
      <div class="signal"></div>
    </div>
  </div>
</div>