从下往上显示的弹出框动画

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        <title></title>
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    .winTxt1 div h3{color:#5024dc;font-size:1.28rem;font-weight:normal;margin-bottom:1.6rem;margin-top:2rem;}
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        <button id="btn">打开</button>
        <div class="winTc1" id="getRule">
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                <img class="close" src="../img/close.png"/>
                <div class="winTxt1">
                    <h2>鼓励人心的鸡汤</h2>
                    <div>
                        <h3>一</h3>
                        <p>1.阅读使人充实,会谈使人敏捷,写作使人精确;</p>
                        <p>2.最大的骄傲于最大的自卑都表示心灵的最软弱无力;</p>
                        <p>3.自知之明是最难得的知识;</p>
                        <p>4.勇气通往天堂,怯懦通往地狱;</p>
                        <p>5.有时候读书是一种巧妙地避开思考的方法。</p>
                    </div>
                    <div>
                        <h3>二</h3>
                        <p>1.阅读一切好书如同和过去最杰出的人谈话;</p>
                        <p>2.越是没有本领的就越加自命不凡;</p>
                        <p>3.越是无能的人,越喜欢挑剔别人的错儿。</p>
                        <p>4.知人者智,自知者明。胜人者有力,自胜者强。</p>
                    </div>
                </div>
            </div>
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转载自www.cnblogs.com/lxystar/p/10716120.html