基于css3实现的途牛旅游网动画特效

 <div class="f1">
        <div class="block">
            <img src="images/yun1.png" class="f1-yun1" />
            <img src="images/yun2.png" class="f1-yun2" />
            <img src="images/yun3.png" class="f1-yun3" />
            <img src="images/lu.png" class="f1-lu" />
            <img src="images/font1.png" class="f1-font" />
            <img src="images/san.png" class="f1-san" />
            <div class="f1-show">
                <a href="#tejia"><img src="images/1.png" class="f1-tejia" /></a>
                <a href="#app"><img src="images/2.png" class="f1-app" /></a>
                <a href="#duoren"><img src="images/3.png" class="f1-duoren" /></a>
                <a href="#shuaka"><img src="images/4.png" class="f1-shuaka" /></a>
            </div>
        </div>
    </div>