【开发小技巧】031—用CSS3如何实现钟摆动画的导航栏菜单效果

编辑 | web前端开发（web_qdkf)

我们都知道，CSS3可以实现很多很酷的动画效果，而今天我们将与大家分享一期用CSS3制作的钟摆动画菜单效果，在这个动画中，我们主要采用CSS3来控制SVG图标的左右摆动效果。

下面，我们进入今天的制作内容。

首先，我们需要在HTML的head部分引入以下文件：

<link rel='stylesheet' href='https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.3/css/bootstrap.min.css'> 
<link rel='stylesheet' href='https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.7.2/animate.min.css'> 
<link rel='stylesheet' href='https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.11.2/css/all.min.css'>

接着，我们需要创建一个HTML的页面导航栏的结构。

以下是HTML代码：

body, html { font-size: 100%;   padding: 0; margin: 0;}
*,*:after,*:before {  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;}
.clearfix:before,.clearfix:after { content: " "; display: table;
}
.clearfix:after {clear: both;}
body{
  background: #222;
  color: #D5D6E2;
  font-weight: 500;
  font-size: 1.05em;
  font-family: "Microsoft YaHei","Segoe UI", "Lucida Grande", Helvetica, Arial,sans-serif;
}
.webqdkf-links a{ color: rgba(255, 255, 255, 0.6);outline: none;text-decoration: none;-webkit-transition: 0.2s;transition: 0.2s;}
.webqdkf-links a:hover,.webqdkf-links a:focus{color:#74777b;text-decoration: none;}
.webqdkf-container{
  margin: 0 auto;
}

.bgcolor-1 { background: #f0efee; }
.bgcolor-2 { background: #f9f9f9; }
.bgcolor-3 { background: #e8e8e8; }
.bgcolor-4 { background: #2f3238; color: #fff; }
.bgcolor-5 { background: #df6659; color: #521e18; }
.bgcolor-6 { background: #2fa8ec; }
.bgcolor-7 { background: #d0d6d6; }
.bgcolor-8 { background: #3d4444; color: #fff; }
.bgcolor-9 { background: #ef3f52; color: #fff;}
.bgcolor-10{ background: #64448f; color: #fff;}
.bgcolor-11{ background: #3755ad; color: #fff;}
.bgcolor-12{ background: #3498DB; color: #fff;}
.bgcolor-20{ background: #494A5F;color: #D5D6E2;}

.webqdkf-header{
  padding: 1em 190px 1em;
  letter-spacing: -1px;
  text-align: center;
  background: #dedede;
}
.webqdkf-header h1 {
  color: #1ab1cc;
  font-weight: 600;
  font-size: 2em;
  line-height: 1;
  margin-bottom: 0;
}
.webqdkf-header h1 span {
  display: block;
  font-size: 60%;
  font-weight: 400;
  padding: 0.8em 0 0.5em 0;
  color: #c3c8cd;
}

.webqdkf-demo a{color: #fff;text-decoration: none;}
.webqdkf-demo{width: 100%;padding-bottom: 1.2em;}
.webqdkf-demo a{display: inline-block;margin: 0.5em;padding: 0.6em 1em;border: 3px solid #fff;font-weight: 700;}
.webqdkf-demo a:hover{opacity: 0.6;}
.webqdkf-demo a.current{background:#1d7db1;color: #fff; }

.webqdkf-links {
  position: relative;
  display: inline-block;
  white-space: nowrap;
  font-size: 1.5em;
  text-align: center;
}

.webqdkf-links::after {
  position: absolute;
  top: 0;
  left: 50%;
  margin-left: -1px;
  width: 2px;
  height: 100%;
  background: #dbdbdb;
  content: '';
  -webkit-transform: rotate3d(0,0,1,22.5deg);
  transform: rotate3d(0,0,1,22.5deg);
}

.webqdkf-icon {
  display: inline-block;
  margin: 0.5em;
  padding: 0em 0;
  width: 1.5em;
  text-decoration: none;
}

.webqdkf-icon span {
  display: none;
}

.webqdkf-icon:before {
  margin: 0 5px;
  text-transform: none;
  font-weight: normal;
  font-style: normal;
  font-variant: normal;
  font-family: 'icomoon';
  line-height: 1;
  speak: none;
  -webkit-font-smoothing: antialiased;
}


.related {
  color: #fff;
  background: #494A5F;
  text-align: center;
  font-size: 1.25em;
  padding: 0.5em 0;
  overflow: hidden;
}

.related > a {
  vertical-align: top;
  width: calc(100% - 20px);
  max-width: 340px;
  display: inline-block;
  text-align: center;
  margin: 20px 10px;
  padding: 25px;
  font-family: "Microsoft YaHei","宋体","Segoe UI", "Lucida Grande", Helvetica, Arial,sans-serif, FreeSans, Arimo;
}
.related a {
  display: inline-block;
  text-align: left;
  margin: 20px auto;
  padding: 10px 20px;
  opacity: 0.8;
  -webkit-transition: opacity 0.3s;
  transition: opacity 0.3s;
  -webkit-backface-visibility: hidden;
  text-decoration: none;
}

.related a:hover,
.related a:active {
  opacity: 1;
}

.related a img {
  max-width: 100%;
  opacity: 0.8;
  border-radius: 4px;
}
.related a:hover img,
.related a:active img {
  opacity: 1;
}
.related h3{font-family: "Microsoft YaHei", sans-serif;font-size: 1.2em}
.related a h3 {
  font-size: 0.85em;
  font-weight: 300;
  margin-top: 0.15em;
  color: #fff;
}
.icon-webqdkf-home-outline:before {
  content: "\e5000";
}

.icon-webqdkf-arrow-forward-outline:before {
  content: "\e5001";
}

@media screen and (max-width: 1024px) {
  .webqdkf-header {
    padding: 2em 10% 2em;
  }
  .webqdkf-header h1 {
        font-size:1.4em;
    }
    .webqdkf-links{font-size: 1.4em}
}

@media screen and (max-width: 960px) {
  .webqdkf-header {
    padding: 2em 10% 2em;
  }
  .webqdkf-header h1 {
        font-size:1.2em;
    }
    .webqdkf-links{font-size: 1.2em}
    .related h3{font-size: 1em;}
  .related a h3 {
    font-size: 0.8em;
  }
}

@media screen and (max-width: 766px) {
  .webqdkf-header h1 {
        font-size:1.3em;
    }
    .webqdkf-links{font-size: 1.3em}
}

@media screen and (max-width: 640px) {
  .webqdkf-header {
    padding: 2em 10% 2em;
  }
  .webqdkf-header h1 {
        font-size:1em;
    }
    .webqdkf-links{font-size: 1em}
    .related h3{font-size: 0.8em;}
  .related a h3 {
    font-size: 0.6em;
  }
}

.box1
{
  height: 200px;
    width: 200px;
   background-image: linear-gradient(to right bottom, #fd4617, #ff6d12, #ff8d19, #ffaa2c, #ffc445);
    border-radius: 50%;
    border: 10px solid white;
  overflow:hidden;
  margin:auto;
  box-shadow: 11px 11px 12px -9px rgba(27, 14, 0, 0.28);
}

.box2
{
  height: 200px;
    width: 200px;
background-image: linear-gradient(to right bottom, #fff05a, #ffde56, #ffcc55, #ffbb57, #ffaa5a);
  box-shadow: 11px 11px 12px -9px rgba(27, 14, 0, 0.28);
    border-radius: 50%;
    border: 10px solid white;
  overflow:hidden;
  margin:auto;
}

.box3
{
  height: 200px;
    width: 200px;
background: #00b09b;  
background: -webkit-linear-gradient(to right, #96c93d, #00b09b);  
background: linear-gradient(to right, #96c93d, #00b09b);

box-shadow: 11px 11px 12px -9px rgba(27, 14, 0, 0.28);
    border-radius: 50%;
    border: 10px solid white;
  overflow:hidden;
  margin:auto;
}

.box4
{
  height: 200px;
    width: 200px;
background-image: linear-gradient(to right bottom, #3da5d9, #2eb9e4, #29ccec, #38dff1, #54f2f2);
box-shadow: 11px 11px 12px -9px rgba(27, 14, 0, 0.28);
    border-radius: 50%;
    border: 10px solid white;
  overflow:hidden;
  margin:auto;
}
.box1-inner
{
      background-color: #ffffff;
    height: 120px;
    width: 120px;
    border-radius: 50%;
    margin: 31px auto;
    background-image: linear-gradient(to right bottom, #ffffff, #fffefe, #fbfbfb, #f1ecec, #d2d2d2);
    box-shadow: 36px 27px 11px -5px rgba(27, 14, 0, 0.16);
    border: 1px solid #e6e5e4;
  transition:1s;
  cursor:pointer;
  animation: swing ease-in-out .3s infinite alternate;
    transform-origin: top;
    transform-box: fill-box;
    left: calc(42% - .0rem);
}
.box1-inner:hover
{
  box-shadow: -25px 50px 11px -5px rgba(27, 14, 0, 0.16);
  transition:1s;
}

.icon-set
{
      text-align: center;
    width: 100%;
    margin: auto;
    padding-top: 24px;
    float: left;
}

.text-heading
{
  position: absolute;
    top: 230%;
    left: 22%;
}
.text-heading h3
{
  text-transform: uppercase;
    text-align: center;
    font-size: 18px;
}
.text-heading p
{
  text-transform: uppercase;
    text-align: center;
    font-size: 10px;
}
.color1 h3
{
  color: #ff6a00;
}

.color2 h3
{
  color: #ffbc00;

}
.color3 h3
{
  color: #06af23;
}
.color4 h3
{
  color: #06a7af;
}

p a{color:#b2b8b9;}
p a:hover{color:#fff;}

.box1:after,.box2:after,.box3:after,.box4:after
{
  content: '';
    background-color: white;
    height: 200px;
    width: 5px;
    position: absolute;
    left: 50%;
  box-shadow: 1px 3px 6px 1px rgba(0, 0, 0, 0.05);
    z-index: -1;
}

.box1:before,.box2:before,.box3:before,.box4:before
{
  content: '';
    height: 15px;
    width: 15px;
    background-color: white;
    position: absolute;
    border-radius: 50%;
    bottom: -8px;
    left: 48.1%;

}

.small-box1
{
height: 50px;
    width: 50px;
    border-radius: 50%;
    border: 2px solid white;
    position: absolute;
    bottom: -120%;
    left: 41.7%;
  box-shadow: 1px 3px 3px rgba(0, 0, 0, 0.21);
 animation: swing ease-in-out .3s infinite alternate;
    transform-origin: top;
    transform-box: fill-box;
    left: calc(42% - .0rem);
}
.small-box1:after
{
  content: '';
    height: 10px;
    width: 10px;
    background-color: white;
    border-radius: 50%;
    position: absolute;
    top: -7px;
    left: 41.5%;
}
.small-box1 div
{

    height: 30px;
    width: 30px;
    border-radius: 50%;
    margin: auto;
    margin-top: 8px;
  box-shadow: 1px 3px 3px rgba(0, 0, 0, 0.21);
}

.color1 div
{
   background-image: linear-gradient(to right bottom, #fd4617, #ff6d12, #ff8d19, #ffaa2c, #ffc445);
}

.color2 div
{
   background-image: linear-gradient(to right bottom, #fff05a, #ffde56, #ffcc55, #ffbb57, #ffaa5a);
}

.color3 div
{
       background: #00b09b;
    background: -webkit-linear-gradient(to right, #96c93d, #00b09b);
    background: linear-gradient(to right, #96c93d, #00b09b);
}

.color4 div
{
      background-image: linear-gradient(to right bottom, #3da5d9, #2eb9e4, #29ccec, #38dff1, #54f2f2);
}



@keyframes swing {
    0% { transform: rotate(8deg); }
    100% { transform: rotate(-8deg); }
}



@media only screen and (max-width: 1024px)
{

  .box1:after, .box2:after, .box3:after, .box4:after
  {
        height: 172px;
  }

  .small-box1:after
  {
    left: 29.5%;
  }
  .small-box1
  {
        left: calc(40% - .0rem);
  }

  .box1 {
   height: 150px;
    width: 150px;
  }

  .box2 {
  height: 150px;
    width: 150px;
  }

  .box3 {
    height: 150px;
    width: 150px;
  }
  .box4 {
   height: 150px;
    width: 150px;
  }

  .box1-inner
  {
    height: 100px;
    width: 100px;
    margin: 14px auto;
  }

  svg
  {
    width:60%;
  }

  .icon-set
  {
    padding-top: 10px;
  }

  .small-box1
  {
        bottom: -142%;
  }

  .text-heading
  {
    top: 251%;
  }
}
@media only screen and (max-width: 768px)
{
  .small-box1
  {
        left: calc(37% - .0rem);
    bottom: -144%;
  }

  .box1 {
     height: 120px;
    width: 120px;
  }

  .box2 {
        height: 120px;
    width: 120px;
  }

  .box3 {
       height: 120px;
    width: 120px;
  }
  .box4 {
        height: 120px;
    width: 120px;
  }

  .box1-inner
  {
   height: 70px;
    width: 70px;
    margin: 14px auto;
  }

  svg
  {
    width:50%;
  }

  .icon-set
  {
    padding-top: 0px;
  }

  .text-heading h3
  {
        font-size: 14px;
  }

  .box1:after, .box2:after, .box3:after, .box4:after
  {
        height: 140px;
  }

  .text-heading p
  {
    font-size: 8px;
  }

  .text-heading
  {
    top: 251%;
  }
}
@media only screen and (max-width: 425px)
{

  .box
  {
    height: 300px;
        margin-bottom: 30px;
  }
  .small-box1
  {
        left: calc(44% - .0rem);
    bottom: 15%;
  }

  .box1:before, .box2:before, .box3:before, .box4:before
  {
    bottom: 145px;
    left: 48.8%;
  }
  .box1 {
        height: 150px;
    width: 150px;
  }

  .box2 {
        height: 150px;
    width: 150px;
  }

  .box3 {
        height: 150px;
    width: 150px;
  }
  .box4 {
        height: 150px;
    width: 150px;
  }

  .box1-inner
  {
   height: 80px;
    width: 80px;
    margin: 26px auto;
  }

  svg
  {
    width:60%;
  }

  .icon-set
  {
    padding-top: 0px;
  }

  .text-heading h3
  {
        font-size: 14px;
  }

  .box1:after, .box2:after, .box3:after, .box4:after
  {
    height: 60px;
  }

  .text-heading p
  {
    font-size: 8px;
  }

  .text-heading {
    top: 88%;
    left: 35%;
}

  .circle1
  {
        right: 25%;
  }

  .circle2
  {
        right: 16%;
  }

  .circle3
  {
        right: 9%;
  }

}
@media only screen and (max-width: 425px)
{

  .box1:before, .box2:before, .box3:before, .box4:before
  {
        left: 48.7%;
  }

  .small-box1:after
  {
    left: 37%;
  }
}
@media only screen and (max-width: 425px)
{

  @media only screen and (max-width: 425px)
  {
    body
    {
      height: 903vh;
    }
.text-heading {
  left: 30%;
  }
  .small-box1 {
left: calc(43.8% - .0rem);
  }
}

最后，我们将HTML与CSS两部分内容进行组合，通过浏览器预览，就得到了以下动画效果：

到这里，今天的内容就结束了。