动画结束后，动画填充模式和不透明度不会保持最后的样式

分类：编程问答

如何解决动画结束后，动画填充模式和不透明度不会保持最后的样式

我正在尝试将opacity设置为animation-fill-mode，在动画结束时将forwards设置为1（应该是最后一个关键帧），但是对于某些情况，我错过它的原因是在动画结束时将不透明度设置为0。

以下是我正在设置动画的元素的片段：

<div class="section active">
   <span>Il</span>
   <span>massaggio</span>
   <span>è</span>
   <span>l'unica</span>
   <span>forma</span>
   <span>di</span>
   <span>piacere</span>
   <span>fisico</span>
   <span>a</span>
   <span>cui</span>
   <span>la</span>
   <span>natura</span>
   <span>ha</span>
   <span>dimenticato</span>
   <div id="arrow-container">
     <img src="images/social-35-white.svg" id="arrow-down" alt="" class="image-2">
   </div>
 </div>

这是带有动画的CSS：

span {
    color: transparent;
    animation: blur 10s ease-out;
    -webkit-animation: blur 10s ease-out;
    animation-fill-mode: forwards;
    -webkit-animation-fill-mode: forwards;
}

span:nth-child(1) {
    animation-delay: 0.1s;
    -webkit-animation-delay: 0.1s;
}
span:nth-child(2) {
    animation-delay: 0.2s;
    -webkit-animation-delay: 0.2s;
}
span:nth-child(3) {
    animation-delay: 0.3s;
    -webkit-animation-delay: 0.3s;
}
span:nth-child(4) {
    animation-delay: 0.4s;
    -webkit-animation-delay: 0.4s;
}
span:nth-child(5) {
    animation-delay: 0.5s;
    -webkit-animation-delay: 0.5s;
}
span:nth-child(6) {
    animation-delay: 0.6s;
    -webkit-animation-delay: 0.6s;
}
span:nth-child(7) {
    animation-delay: 0.7s;
    -webkit-animation-delay: 0.7s;
}
span:nth-child(8) {
    animation-delay: 0.8s;
    -webkit-animation-delay: 0.8s;
}
span:nth-child(9) {
    animation-delay: 0.9s;
    -webkit-animation-delay: 0.9s;
}
span:nth-child(10) {
    animation-delay: 1.0s;
    -webkit-animation-delay: 1.0s;
}
span:nth-child(11) {
    animation-delay: 1.1s;
    -webkit-animation-delay: 1.1s;
}
span:nth-child(12) {
    animation-delay: 1.2s;
    -webkit-animation-delay: 1.2s;
}
span:nth-child(13) {
    animation-delay: 1.3s;
    -webkit-animation-delay: 1.3s;
}
span:nth-child(14) {
    animation-delay: 1.4s;
    -webkit-animation-delay: 1.4s;
}


@keyframes blur {
    0%      {text-shadow:  0 0 100px #111; opacity:0;}
    5%      {text-shadow:  0 0 90px #111;}
    15%     {opacity: 1;}
    20%     {text-shadow:  0 0 0px #111;}
    80%     {text-shadow:  0 0 0px #111;}
    100%.   {opacity: 1;}
}

@-webkit-keyframes blur {
    0%      {text-shadow:  0 0 100px #111; opacity:0;}
    5%      {text-shadow:  0 0 90px #111;}
    15%     {opacity: 1;}
    20%     {text-shadow:  0 0 0px #111;}
    80%     {text-shadow:  0 0 0px #111;}
    100%    {opacity: 1;}
}

为什么最后不保持不透明度？

解决方法

您的最后一个关键帧是100% {opacity: 1;}，因此这是保留的样式...但是，不是使文字可见的样式！

文本具有color:transparent，因此不透明度没有任何作用。实际上使文本可见的样式是text-shadow: 0 0 0px #111;，因此您需要在最后一个关键帧中添加该样式：

100%   {opacity: 1; text-shadow:  0 0 0px #111; }

注意：我保留了opacity，以防您此处未包含其他元素，但是对于此处的代码，它实际上没有任何作用：）

工作示例：
您可以在下面看到此工作，仅供参考，我跑了2秒钟，因此可以更快地看到它的工作：）

span {
    color: transparent;
    animation: blur 2s ease-out;
    -webkit-animation: blur 2s ease-out;
    animation-fill-mode: forwards;
    -webkit-animation-fill-mode: forwards;
}

span:nth-child(1) {
    animation-delay: 0.1s;
    -webkit-animation-delay: 0.1s;
}
span:nth-child(2) {
    animation-delay: 0.2s;
    -webkit-animation-delay: 0.2s;
}
span:nth-child(3) {
    animation-delay: 0.3s;
    -webkit-animation-delay: 0.3s;
}
span:nth-child(4) {
    animation-delay: 0.4s;
    -webkit-animation-delay: 0.4s;
}
span:nth-child(5) {
    animation-delay: 0.5s;
    -webkit-animation-delay: 0.5s;
}
span:nth-child(6) {
    animation-delay: 0.6s;
    -webkit-animation-delay: 0.6s;
}
span:nth-child(7) {
    animation-delay: 0.7s;
    -webkit-animation-delay: 0.7s;
}
span:nth-child(8) {
    animation-delay: 0.8s;
    -webkit-animation-delay: 0.8s;
}
span:nth-child(9) {
    animation-delay: 0.9s;
    -webkit-animation-delay: 0.9s;
}
span:nth-child(10) {
    animation-delay: 1.0s;
    -webkit-animation-delay: 1.0s;
}
span:nth-child(11) {
    animation-delay: 1.1s;
    -webkit-animation-delay: 1.1s;
}
span:nth-child(12) {
    animation-delay: 1.2s;
    -webkit-animation-delay: 1.2s;
}
span:nth-child(13) {
    animation-delay: 1.3s;
    -webkit-animation-delay: 1.3s;
}
span:nth-child(14) {
    animation-delay: 1.4s;
    -webkit-animation-delay: 1.4s;
}


@keyframes blur {
    0%      {text-shadow:  0 0 100px #111; opacity:0;}
    5%      {text-shadow:  0 0 90px #111;}
    15%     {opacity: 1;}
    20%     {text-shadow:  0 0 0px #111;}
    80%     {text-shadow:  0 0 0px #111;}
    100%   {opacity: 1; text-shadow:  0 0 0px #111; }
}

@-webkit-keyframes blur {
    0%      {text-shadow:  0 0 100px #111; opacity:0;}
    5%      {text-shadow:  0 0 90px #111;}
    15%     {opacity: 1;}
    20%     {text-shadow:  0 0 0px #111;}
    80%     {text-shadow:  0 0 0px #111;}
    100%   {opacity: 1; text-shadow:  0 0 0px #111; }
}
<div class="section active">
   <span>Il</span>
   <span>massaggio</span>
   <span>è</span>
   <span>l'unica</span>
   <span>forma</span>
   <span>di</span>
   <span>piacere</span>
   <span>fisico</span>
   <span>a</span>
   <span>cui</span>
   <span>la</span>
   <span>natura</span>
   <span>ha</span>
   <span>dimenticato</span>
   <div id="arrow-container">
     <img src="images/social-35-white.svg" id="arrow-down" alt="" class="image-2">
   </div>
 </div>

此外，您还需要在该行中另外输入.： 100%. {opacity: 1;}

正如您所说，使用animation-fill-mode: forwards;意味着该元素将保留执行期间遇到的最后一个关键帧设置的计算值，这是对任何其他询问此问题的用户的参考：MDN Docs for animation-fill-mode。 / p>

,

这应该有效

span {
  animation: blur 5s ease-out;
  animation-fill-mode: forwards;
}

span:nth-child(1) {
   opacity: 0;
    animation-delay: 0.1s;
    -webkit-animation-delay: 0.1s;
}
span:nth-child(2) {
  opacity: 0;
    animation-delay: 0.2s;
    -webkit-animation-delay: 0.2s;
}
span:nth-child(3) {
  opacity: 0;
    animation-delay: 0.3s;
    -webkit-animation-delay: 0.3s;
}
span:nth-child(4) {
  opacity: 0;
    animation-delay: 0.4s;
    -webkit-animation-delay: 0.4s;
}
span:nth-child(5) {
  opacity: 0;
    animation-delay: 0.5s;
    -webkit-animation-delay: 0.5s;
}
span:nth-child(6) {
  opacity: 0;
    animation-delay: 0.6s;
    -webkit-animation-delay: 0.6s;
}
span:nth-child(7) {
  opacity: 0;
    animation-delay: 0.7s;
    -webkit-animation-delay: 0.7s;
}
span:nth-child(8) {
  opacity: 0;
    animation-delay: 0.8s;
    -webkit-animation-delay: 0.8s;
}
span:nth-child(9) {
  opacity: 0;
    animation-delay: 0.9s;
    -webkit-animation-delay: 0.9s;
}
span:nth-child(10) {
  opacity: 0;
    animation-delay: 1.0s;
    -webkit-animation-delay: 1.0s;
}
span:nth-child(11) {
  opacity: 0;
    animation-delay: 1.1s;
    -webkit-animation-delay: 1.1s;
}
span:nth-child(12) {
  opacity: 0;
    animation-delay: 1.2s;
    -webkit-animation-delay: 1.2s;
}
span:nth-child(13) {
    opacity: 0;
    animation-delay: 1.3s;
    -webkit-animation-delay: 1.3s;
}
span:nth-child(14) {
  opacity: 0;
    animation-delay: 1.4s;
    -webkit-animation-delay: 1.4s;
}

@keyframes blur {
  0% { color: transparent; text-shadow:  0 0 100px #111;  }
  50% { color: transparent; text-shadow:  0 0 90px }
  100% { opacity: 1; color: transparent; text-shadow:  0 0 0px #111; }
}
<div class="section active">
   <span>Il</span>
   <span>massaggio</span>
   <span>è</span>
   <span>l'unica</span>
   <span>forma</span>
   <span>di</span>
   <span>piacere</span>
   <span>fisico</span>
   <span>a</span>
   <span>cui</span>
   <span>la</span>
   <span>natura</span>
   <span>ha</span>
   <span>dimenticato</span>
   <div id="arrow-container">
     <img src="images/social-35-white.svg" id="arrow-down" alt="" class="image-2">
   </div>
 </div>

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