<section class="block">
    <input type="checkbox">
    <div class="case-block">
      <div>展開</div>
      <div>收起</div>
    </div>
    <div class="detail">
      <div>唧唧復(fù)唧唧，木蘭當(dāng)戶織。不聞機(jī)杼聲，惟聞女嘆息。(惟聞 通：唯)問女何所思，問女何所憶。女亦無所思，女亦無所憶。昨夜見軍帖，可汗大點(diǎn)兵，軍書十二卷，卷卷有爺名。阿爺無大兒，木蘭無長兄，愿為市鞍馬，從此替爺征。(惟聞
        通：唯)</div>
      <div>東市買駿馬，西市買鞍韉，南市買轡頭，北市買長鞭。旦辭爺娘去，暮宿黃河邊，不聞爺娘喚女聲，但聞黃河流水鳴濺濺。旦辭黃河去，暮至黑山頭，不聞爺娘喚女聲，但聞燕山胡騎鳴啾啾。</div>
      <div>萬里赴戎機(jī)，關(guān)山度若飛。朔氣傳金柝，寒光照鐵衣。將軍百戰(zhàn)死，壯士十年歸。</div>
      <div>歸來見天子，天子坐明堂。策勛十二轉(zhuǎn)，賞賜百千強(qiáng)?？珊箚査?，木蘭不用尚書郎，愿馳千里足，送兒還故鄉(xiāng)。(一作：愿借明駝千里足)</div>
      <div>爺娘聞女來，出郭相扶將；阿姊聞妹來，當(dāng)戶理紅妝；小弟聞姊來，磨刀霍霍向豬羊。開我東閣門，坐我西閣床，脫我戰(zhàn)時(shí)袍，著我舊時(shí)裳。當(dāng)窗理云鬢，對(duì)鏡帖花黃。出門看火伴，火伴皆驚忙：同行十二年，不知木蘭是女郎。（帖
      通：貼；驚忙一作：惶；惶 火伴 通：伙）</div>
     <div>雄兔腳撲朔，雌兔眼迷離；雙兔傍地走，安能辨我是雄雌？</div>
    </div>
  </section>

@charset "UTF-8";

.title-block {
    height: 26px;
    text-align: center;
}

.block {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: reverse;
    -ms-flex-flow: column-reverse nowrap;
    flex-flow: column-reverse nowrap;
    width: 360px;
    margin: 0 auto;
    font-size: 14px;
    color: #4C4C4C;
    line-height: 28px;
    border: 1px solid #999;
    padding: 10px;
}

.block > .detail {
    max-height: 163px;
    margin-bottom: 10px;
    overflow: hidden;
}

.block > .case-block {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    width: 120px;
    height: 24px;
    margin: 0 auto 0;
    color: #0e0e0e;
    background: #fff;
    border: 1px solid #0e0e0e;
    border-radius: 5px;
}

.block > .case-block div:nth-of-type(1) {
    display: block;
}

.block > .case-block div:nth-of-type(2) {
    display: none;
}

.block > [type="checkbox"] {
    position: relative;
    display: block;
    width: 120px;
    height: 24px;
    margin: -24px auto 0;
    z-index: 1000;
    opacity: 0;
}

.block > [type="checkbox"]:hover + .case-block {
    background-color: #f5f5f5;
}

.block > [type="checkbox"]:checked + .case-block div:nth-of-type(1) {
    display: none;
}

.block > [type="checkbox"]:checked + .case-block div:nth-of-type(2) {
    display: block;
}

.block > [type="checkbox"]:checked + .case-block + .detail {
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}