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                <div class="site">
    <header id="header">
    <div id="main">
      <div id="demo">
        <div class="inner">
          <section class="section wow fadeInDown"></section>
          <div class="col">
            <div class="col-3 wow slideInDown" data-wow-delay="0.3s">            </div>
              <div class="col-3 wow slideInDown" data-wow-delay="0.5s">
                <div class="col-3 wow slideInDown" data-wow-delay="0.7s">
                <section class="wow pulse" style="background-color: #e74c3c;" data-wow-iteration="infinite" data-wow-duration="1500ms"></section>
                <section class="section-purple wow slideInRight" data-wow-delay="0.2s"></section>
                <section class="section-blue wow bounceInLeft" data-wow-offset="300"></section>
                <section class="section-green wow slideInLeft" data-wow-duration="2s"></section>
                <section class="section wow fadeInDown"></section>
              <script src="https://cdnjs.cloudflare.com/ajax/libs/wow/1.1.2/wow.min.js"></script>
                new WOW().init();
              body {
font-family:'Hiragino Kaku Gothic ProN', 'ヒラギノ角ゴ ProN W3', 'Hiragino Kaku Gothic Pro', 'ヒラギノ角ゴ Pro W3', 'Meiryo', 'メイリオ', 'MS PGothic', 'MS Pゴシック', Helvetica, Arial, sans-serif;
margin: 0 auto;
 #main {
.col {
.col:after {content:""; clear:both; display:block; height:0; visibility:hidden;}
height: 120px;
margin:0 2% 2% 0;
{float:right; margin:0 0 2% 0;}
.col-3:nth-child(2) {margin:0 0 2% 0;}
section {height:240px; margin:0 0 60px 0; background:#ccc;}
.col {margin-bottom:40px;}
.col-3 {background-color:#26B74C;}
.section-purple {background-color:#9b59b6;}
.section-blue {background-color:#3498db;}
.section-green {background-color:#2ecc71;}
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