Pulsing Heart CSS动画

Question

我只用CSS制作一个动画心脏.

我希望它脉冲2次,稍作休息,然后再重复一次.

我现在拥有的:

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

我想要的是:

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

我该怎么做？

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>

另见这个小提琴.

Answer 1

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 );
  }
}

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>

编辑:

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>

Answer 2

脉冲2次,稍作休息,然后再重复一次

试试这个.使用动画opacity是一个糟糕的选择.transform: scale()会做的.

.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>

Answer 3

我喜欢ketan的答案,但我想改进心脏动画以使其更逼真.

• 心脏跳动时心脏的大小不会加倍.对我来说,10%的尺寸变化看起来更好.
• 我喜欢它变大和变小
• 当它完全停止移动时,我看起来已经死了.即使它没有跳动,也需要扩大或收缩一点
• 我删除了"备用路线"代码,以便每次都以相同的方式运行
• 我明确地具有心脏起始端和正常比例(1)并且在序列的中间具有动画.这种方式对我来说似乎更清晰.

#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>

Answer 4

基于各种评论并利用♥,我们将得到这个:

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>

Answer 5

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>

输出量

更多信息：心跳动画