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CSS3更改动画中的内容

css-animations css3 css

ClickThisNick · 技术社区 · 7 年前

我正在用CSS动画制作一个呼吸圈。

Circle Expanding = "Breath In"

Circle Retains Size = "Hold"

Circle Shrinks = "Breath Out"

一旦圆达到动画的100%,我希望内容切换到“呼气”,而它永远不会这样做。如何让内容从“保持”切换到“呼气”?

 @import "compass/css3";

  .circle {
    background: purple;
    width: 500px;
    height: 500px;
    margin: auto;
    border-radius: 100%;
    overflow: hidden;
    -webkit-animation: grow 5s 1;
    animation-iteration-count:infinite;
    text-align: center;
    display: block;
    line-height: 450px;
    font-size: 60px;
  }

  .text::before {
    -webkit-animation: grow 5s 1;
    animation-iteration-count:infinite;
    content: '';
  }

@-webkit-keyframes grow {
    0% {
      -webkit-transform: scale( .5);
      -moz-transform: scale( .5);
      -o-transform: scale( .5);
      -ms-transform: scale( .5);
      transform: scale( .5);
      content: 'Breath In';
    }

    40% {
      -webkit-transform: scale( 1);
      -moz-transform: scale( 1);
      -o-transform: scale( 1);
      -ms-transform: scale( 1);
      transform: scale( 1);
    }

    60% {
      -webkit-transform: scale( 1);
      -moz-transform: scale( 1);
      -o-transform: scale( 1);
      -ms-transform: scale( 1);
      transform: scale( 1);
      content: 'Hold';
    }

    100% {
      -webkit-transform: scale( 0.5);
      -moz-transform: scale( 0.5);
      -o-transform: scale( 0.5);
      -ms-transform: scale( 0.5);
      transform: scale( 0.5);
      content: 'Breath out';
    }
  }

<div class="circle">
    <div class="text"></div>
</div>

http://jsfiddle.net/gh9xtu6q/2/

2 回复 | 直到 7 年前

vals 7 年前

我想是因为你已经定义了 相同的动画 对于主元素和伪元素,这就产生了一个问题。相反,您应该保留主元素上的缩放动画和伪元素上的内容动画。

您只定义了带有前缀的动画 -webkit- ,您应该删除它

.circle {
  background: purple;
  width: 500px;
  height: 500px;
  margin: auto;
  border-radius: 100%;
  overflow: hidden;
  animation: grow 5s 1;
  animation-iteration-count: infinite;
  text-align: center;
  display: block;
  line-height: 450px;
  font-size: 60px;
}

.text::before {
  animation: grow-content 5s 1;
  animation-iteration-count: infinite;
  content: '';
}

@keyframes grow {
  0% {
    
    transform: scale( 0.5);
  }
  40% {
    transform: scale( 1);
  }
  60% {
    transform: scale( 1);
  }
  100% {
    transform: scale( 0.5);
  }
}

@keyframes grow-content {
  0%, 40% {
    content: 'Breath In';
  }
  41%, 60% {
    content: 'Hold';
  }
  61%, 100% {
    content: 'Breath out';
  }
}

<div class="circle">
  <div class="text"></div>
</div>

sol 7 年前

您可以使用添加文本 <span> 标记而不是伪元素。这是一个更多的CSS,但它将给你更多的时间控制,并使它更容易过渡其他属性(颜色,位置等)。

fiddle

@import "compass/css3";
.circle {
  background: purple;
  width: 500px;
  height: 500px;
  margin: auto;
  border-radius: 100%;
  overflow: hidden;
  animation: grow 5s 1;
  animation-iteration-count: infinite;
  display: flex;
  justify-content: center;
  align-items: center;
}

.text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: white;
  font-size: 60px;
  font-family: sans-serif;
  animation: changeText 5s;
}

.text span {
  position: absolute;
  left: 0;
  right: 0;
  text-align: center;
}

.text-in,
.text-hold,
.text-out {
  opacity: 0;
}

.text-in {
  animation: breatheIn 5s infinite;
}

.text-hold {
  animation: breatheHold 5s infinite;
}

.text-out {
  animation: breatheOut 5s infinite;
}

@keyframes breatheIn {
  0% {
    opacity: 0;
  }
  15% {
    opacity: 1;
  }
  30% {
    opacity: 1;
  }
  35% {
    opacity: 0;
  }
}

@keyframes breatheHold {
  0% {
    opacity: 0;
  }
  35% {
    opacity: 0;
  }
  40% {
    opacity: 1;
  }
  55% {
    opacity: 1;
  }
  60% {
    opacity: 0;
  }
}

@keyframes breatheOut {
  0% {
    opacity: 0;
  }
  60% {
    opacity: 0;
  }
  73% {
    opacity: 1;
  }
}

@-webkit-keyframes grow {
  0% {
    -webkit-transform: scale( .5);
    -moz-transform: scale( .5);
    -o-transform: scale( .5);
    -ms-transform: scale( .5);
    transform: scale( .5);
  }
  40% {
    -webkit-transform: scale( 1);
    -moz-transform: scale( 1);
    -o-transform: scale( 1);
    -ms-transform: scale( 1);
    transform: scale( 1);
  }
  60% {
    -webkit-transform: scale( 1);
    -moz-transform: scale( 1);
    -o-transform: scale( 1);
    -ms-transform: scale( 1);
    transform: scale( 1);
  }
  100% {
    -webkit-transform: scale( 0.5);
    -moz-transform: scale( 0.5);
    -o-transform: scale( 0.5);
    -ms-transform: scale( 0.5);
    transform: scale( 0.5);
  }
}

<div class="circle">
  <div class="text">
    <span class="text-in">Breath In</span>
    <span class="text-hold">Hold</span>
    <span class="text-out">Breath Out</span>
  </div>
</div>