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Html 脉动心脏 CSS 动画

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时间：2020-08-29 18:46:41 　来源:igfitidea点击:

Pulsing Heart CSS animation

htmlcssanimation

提问by Fernando Souza

I`m working on an animated heart only with CSS.

我只使用 CSS 制作动画心脏。

I want it to pulse 2 times, take a small break, and then repeat it again.

我希望它脉冲 2 次，休息一下，然后再重复一次。

What I have now:

我现在所拥有的：

small ==> big ==> small ==> repeat animation

What I'm going for:

我要做什么： 

small ==> big ==> small ==> big ==> small ==> pause ==> repeat animation

How can I do it?

我该怎么做？

My code :

我的代码：

#button{
  width:450px;
  height:450px;
  position:relative;
  top:48px;
  margin:0 auto;
  text-align:center;
  }
#heart img{
  position:absolute;
  left:0;
  right:0;
  margin:0 auto;
  -webkit-transition: opacity 7s ease-in-out;
  -moz-transition: opacity 7s ease-in-out;
  -o-transition: opacity 7s ease-in-out;
  transition: opacity 7s ease-in-out;}

 @keyframes heartFadeInOut {
  0% {
    opacity:1;
  }
  14% {
    opacity:1;
  }
  28% {
    opacity:0;
  }
  42% {
    opacity:0;
  }
  70% {
    opacity:0;
  }
}

#heart img.top { 
  animation-name: heartFadeInOut; 
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
  animation-duration: 1s;
  animation-direction: alternate;

}
<div id="heart" >
  <img class="bottom" src="https://goo.gl/nN8Haf" width="100px">
  <img class="top" src="https://goo.gl/IIW1KE" width="100px">
</div>

See also this Fiddle.

另请参阅此 Fiddle。

回答by Rein

You can incorporate the pause into the animation. Like so:

您可以将暂停合并到动画中。像这样：

@keyframes heartbeat
{
  0%
  {
    transform: scale( .75 );
  }
  20%
  {
    transform: scale( 1 );
  }
  40%
  {
    transform: scale( .75 );
  }
  60%
  {
    transform: scale( 1 );
  }
  80%
  {
    transform: scale( .75 );
  }
  100%
  {
    transform: scale( .75 );
  }
}

Working example: https://jsfiddle.net/t7f97kf4/

工作示例：https: //jsfiddle.net/t7f97kf4/

@keyframes heartbeat
{
  0%
  {
    transform: scale( .75 );
  }
  20%
  {
    transform: scale( 1 );
  }
  40%
  {
    transform: scale( .75 );
  }
  60%
  {
    transform: scale( 1 );
  }
  80%
  {
    transform: scale( .75 );
  }
  100%
  {
    transform: scale( .75 );
  }
}

div
{
  background-color: red;
  width: 50px;
  height: 50px;
  animation: heartbeat 1s infinite;
}
<div>
Heart
</div>

Edit:

编辑：

Working example with pure CSS heart shape: https://jsfiddle.net/qLfg2mrd/

纯 CSS 心形的工作示例：https: //jsfiddle.net/qLfg2mrd/

@keyframes heartbeat
{
  0%
  {
    transform: scale( .75);
  }
  
  20%
  {
    transform: scale( 1);
  }
  
  40%
  {
    transform: scale( .75);
  }
  
  60%
  {
    transform: scale( 1);
  }
  80% {
    transform: scale( .75);
  }
  
  100%
  {
    transform: scale( .75);
  }
}

#heart
{
  position: relative;
  width: 100px;
  height: 90px;
  animation: heartbeat 1s infinite;
}

#heart:before,
#heart:after
{
  position: absolute;
  content: "";
  left: 50px;
  top: 0;
  width: 50px;
  height: 80px;
  background: red;
  -moz-border-radius: 50px 50px 0 0;
  border-radius: 50px 50px 0 0;
  -webkit-transform: rotate(-45deg);
  -moz-transform: rotate(-45deg);
  -ms-transform: rotate(-45deg);
  -o-transform: rotate(-45deg);
  transform: rotate(-45deg);
  -webkit-transform-origin: 0 100%;
  -moz-transform-origin: 0 100%;
  -ms-transform-origin: 0 100%;
  -o-transform-origin: 0 100%;
  transform-origin: 0 100%;
}

#heart:after
{
  left: 0;
  -webkit-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  -o-transform: rotate(45deg);
  transform: rotate(45deg);
  -webkit-transform-origin: 100% 100%;
  -moz-transform-origin: 100% 100%;
  -ms-transform-origin: 100% 100%;
  -o-transform-origin: 100% 100%;
  transform-origin: 100% 100%;
}
<div id="heart"></div>

回答by Jinu Kurian

Pulse 2 times, take a small break, and then repeat it again

脉冲 2 次，稍作休息，然后再重复一次

Try this. Going with animation opacityis a bad choice. transform: scale()will do the job.

尝试这个。使用动画opacity是一个糟糕的选择。transform: scale()会做的工作。

.heart:before {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  font-family: 'icons';
  font-size: 21px;
  text-indent: 0;
  font-variant: normal;
  line-height: 21px;
}
.heart {
  position: relative;
  width: 500px;
  overflow: inherit;
  margin: 50px auto;
  list-style: none;
  -webkit-animation: animateHeart 2.5s infinite;
  animation: animateHeart 2.5s infinite;
}
.heart:before,
.heart:after {
  position: absolute;
  content: '';
  top: 0;
  left: 50%;
  width: 120px;
    height: 200px;
    background: red;
    border-radius: 100px 100px 0 0;
  -webkit-transform: rotate(-45deg) translateZ(0);
  transform: rotate(-45deg) translateZ(0);
  -webkit-transform-origin: 0 100%;
  transform-origin: 0 100%;
}
.heart:after {
  left: 26%;
  -webkit-transform: rotate(45deg) translateZ(0);
  transform: rotate(45deg) translateZ(0);
  -webkit-transform-origin: 100% 100%;
  transform-origin: 100% 100%;
}
@-webkit-keyframes animateHeart {
  0% {
    -webkit-transform: scale(0.8);
  }
  5% {
    -webkit-transform: scale(0.9);
  }
  10% {
    -webkit-transform: scale(0.8);
  }
  15% {
    -webkit-transform: scale(1);
  }
  50% {
    -webkit-transform: scale(0.8);
  }
  100% {
    -webkit-transform: scale(0.8);
  }
}
@keyframes animateHeart {
  0% {
    transform: scale(0.8);
  }
  5% {
    transform: scale(0.9);
  }
  10% {
    transform: scale(0.8);
  }
  15% {
    transform: scale(1);
  }
  50% {
    transform: scale(0.8);
  }
  100% {
    transform: scale(0.8);
  }
}
span {
  font-family: 'Cantora One', sans-serif;
  font-size: 64px;
  position: absolute;
  top: 165px;
}
<div class="heart">
</div>

回答by Stephen Ostermiller

I like ketan's answer, but I wanted to improve the heart animation to make it more realistic.

我喜欢ketan的回答，但我想改进心脏动画以使其更逼真。

  • A heart does not double in size when it beats. 10% change in size looks better to me.
  • I like it getting both larger and smaller
  • When it stops moving altogether it looks dead to me. Even when it isn't beating, it needs to expand or contract a little
  • I removed the "alternate directions" code so that it runs the same way through every time
  • I explicitly have the heart start end and at normal scale (1) and have the animation in the middle of the sequence. It seems clearer that way to me.
  • 心脏在跳动时不会变大。10% 的尺寸变化对我来说看起来更好。
  • 我喜欢它变大变小
  • 当它完全停止移动时，对我来说它看起来已经死了。即使它不跳动，它也需要稍微膨胀或收缩
  • 我删除了“替代方向”代码，以便它每次都以相同的方式运行
  • 我明确地让心脏开始以正常比例 (1) 结束，并在序列中间放置动画。这样对我来说似乎更清楚。

#heart img{
  position:absolute;
  left:0;
  right:0;
  margin:0 auto;
 }

 @keyframes heartFadeInOut {
  0% {transform: scale(1);}
  25% {transform: scale(.97);}
  35% {transform: scale(.9);}
  45% {transform: scale(1.1);}
  55% {transform: scale(.9);}
  65% {transform: scale(1.1);}
  75% {transform: scale(1.03);}
  100% {transform: scale(1);}
}

#heart img.bottom { 
  animation-name: heartFadeInOut; 
  animation-iteration-count: infinite;
  animation-duration: 2s;
}
<div id="heart" >
  <img class="bottom" src="https://i.stack.imgur.com/iBCpb.png" width="100px">
</div>

回答by Tom B.

Based on various comments and making use of the ♥ we'll get this:

根据各种评论并利用♥，我们将得到：

body {
  font-size: 40pt;
  color: red;
}
@keyframes heartbeat {
  0% {
    font-size: .75em;
  }
  20% {
    font-size: 1em;
  }
  40% {
    font-size: .75em;
  }
  60% {
    font-size: 1em;
  }
  80% {
    font-size: .75em;
  }
  100% {
    font-size: .75em;
  }
}
div {
  animation: heartbeat 1s infinite;
}
<div>
  &hearts;
</div>

回答by CodeSnail

body{
  margin: 0;
  padding: 0;
  background: #1f1f1f;
}

body:before
{
  position: absolute;
  content: '';
  left: 50%;
  width: 50%;
  height: 100%;
  background: rgba(0,0,0,.2);

}

.center
{
  position: absolute;
  top:50%;
  left: 50%;
  background: #1f1f1f;
  transform: translate(-50%,-50%);
  padding: 100px;
  border: 5px solid white;
  border-radius: 100%;
  box-shadow:20px 20px 45px rgba(0,0,0,.4);
  z-index: 1;
  overflow: hidden;
}
.heart
{
  position: relative;
  width: 100px;
  height: 100px;
  background:#ff0036;
  transform: rotate(45deg) translate(10px,10px);
  animation: ani 1s linear infinite;
}
.heart:before
{
  content: '';
  width: 100%;
  height: 100%;
  background: #ff0036;
  position: absolute;
  top:-50%;
  left:0;
  border-radius: 50%;
}
.heart:after
{
  content:'';
  width: 100%;
  height: 100%;
  background: #ff0036;
  position: absolute;
  bottom:0;
  right:50%;
  border-radius: 50%;
}
.center:before
{
  content: '';
  position: absolute;
  top:0;
  left:-50%;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,.3);
}

@keyframes ani{
  0%{
    transform: rotate(45deg) translate(10px,10px) scale(1);
  }
  25%{
    transform: rotate(45deg) translate(10px,10px) scale(1);
  }
  30%{
    transform: rotate(45deg) translate(10px,10px) scale(1.4);
  }
  50%{
    transform: rotate(45deg) translate(10px,10px) scale(1.2);
  }
  70%{
    transform: rotate(45deg) translate(10px,10px) scale(1.4);
  }
  90%{
    transform: rotate(45deg) translate(10px,10px) scale(1);
  }
  100%{
    transform: rotate(45deg) translate(10px,10px) scale(1);
  }
}
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>HeartBeat Animation</title>
    <link rel="stylesheet" href="Style.css" type="text/css">
  </head>
  <body>
    <div class="center">
      <div class="heart">
        
      </div>
    </div>
  </body>
</html>

Output

输出

for more: Heart Beating Animation

更多：心跳动画

回答by ketan

I think this is what you want for your image animation. There is no need of top image. Just use bottom.

我认为这就是您想要的图像动画。不需要顶部图像。只需使用底部。

#button{
  width:450px;
  height:450px;
  position:relative;
  top:48px;
  margin:0 auto;
  text-align:center;
  }
#heart img{
  position:absolute;
  left:0;
  right:0;
  margin:0 auto;
 }

 @keyframes heartFadeInOut {
  0%
  {    transform: scale( .5 );  }
  20%
  {    transform: scale( 1 );  }
  40%
  {    transform: scale( .5 );  }
  60%
  {    transform: scale( 1 );  }
  80%
  {    transform: scale( .5 );  }
  100%
  {    transform: scale( .5 );  }
}

#heart img.bottom { 
  animation-name: heartFadeInOut; 
  animation-iteration-count: infinite;
  animation-duration: 1.5s;
  animation-direction: alternate;

}
<div id="heart" >
  <img class="bottom" src="https://goo.gl/nN8Haf" width="100px">
</div>

回答by Daniel Dewhurst

I needed this for a project I was working on. I was trying to make it look as realistic as possible, and this is what I came up with.

我正在做的一个项目需要这个。我试图让它看起来尽可能真实，这就是我想出来的。

@keyframes heartbeat {
    0% {
        transform: scale( .95 );
    }

    20% {
        transform: scale( .97 );
    }

    30% {
        transform: scale( .95 );
    }

    40% {
        transform: scale( 1 );
    }

    100% {
        transform: scale( .95 );
    }
}

animation: heartbeat 1s infinite;

animation: heartbeat 1s infinite;

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