css - 做一个 fill remaining height</h1> <div id="body"><p>I learned from <a href="https://stackoverflow.com/questions/8555820/set-div-to-remaining-height-using-css-with-unknown-height-divs-above-and-below">this question</a> </a></h1> <div class="ml12 aside-cta flex--item print:d-none sm:ml0 sm:mb12 sm:order-first sm:as-end"> <a href="https://stackoverflow.com/questions/ask" target="_blank" class="ws-nowrap s-btn s-btnprimary">问问题</a></div> </div> <div class="d-flex fw-wrap pb8 mb16 bb bc-black-075"> <div class="flex--item ws-nowrap mr16 mb8"> <span class="fc-light mr2"></span> </div> <div class="flex--item ws-nowrap mr16 mb8" title="2022-04-17 15:46:40Z"> <span class="fc-light mr2">问问题</span> <time itemprop="dateCreated" datetime="2013-08-27T06:27:23.477">2013-08-27T06:27:23.477</time> </div> <div class="flex--item ws-nowrap mb8" title="Viewed 6 times"> <span class="fc-light mr2"></span> 25277 次 </div> </div> <div id="mainbar" role="main" aria-label="question and answers"> <div 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itemprop="commentCount">4</span> </div> </div> <div class="js-zone-container zone-container-responsive"> <div id="dfp-isb" class="everyonelovesstackoverflow everyonelovesinline-sidebar mx-auto" style="min-height: auto; height: auto; display: none;"></div> <div class="js-report-ad-button-container mx-auto" style="width: 300px"></div> </div> <div id="answers"> <a name="tab-top"></a> <div id="answers-header"> <div class="answers-subheader d-flex ai-center mb8"> <div class="flex--item fl1"> <h2 class="mb0" data-answercount=""> 3 回答 <span style="display:none;" itemprop="answerCount">3</span> </h2> </div> </div> </div> <a name="7"></a> <div id="answer-7" class="answer js-answer accepted-answer" data-answerid="7" data-parentid="4" data-score="506" data-position-on-page="1" data-highest-scored="1" data-question-has-accepted-highest-score="1" itemprop="suggestedAnswer" itemscope="" itemtype="https://schema.org/Answer"> <div class="post-layout"> <div class="votecell post-layout--left"> <div class="js-voting-container d-flex jc-center fd-column ai-stretch gs4 fc-black-200" data-post-id="7"> <button class="js-vote-up-btn flex--item s-btn s-btnunset c-pointer " data-controller="s-tooltip" data-s-tooltip-placement="right" aria-pressed="false" aria-label="Up vote" data-selected-classes="fc-theme-primary" data-unselected-classes="" aria-describedby="--stacks-s-tooltip-dgvag2l3"> <svg aria-hidden="true" class="svg-icon iconArrowUpLg" width="36" height="36" viewBox="0 0 36 36"><path d="M2 25h32L18 9 2 25Z"></path></svg> </button><div id="--stacks-s-tooltip-dgvag2l3" class="s-popover s-popovertooltip pe-none" aria-hidden="true" role="tooltip">This answer is useful<div class="s-popover--arrow"></div></div> <div class="js-vote-count flex--item d-flex fd-column ai-center fc-black-500 fs-title" itemprop="upvoteCount" data-value="18"> 18 </div> <button class="js-vote-down-btn flex--item s-btn s-btnunset c-pointer " data-controller="s-tooltip" data-s-tooltip-placement="right" aria-pressed="false" aria-label="Down vote" data-selected-classes="fc-theme-primary" data-unselected-classes="" aria-describedby="--stacks-s-tooltip-gn8ppsfv"> <svg aria-hidden="true" class="svg-icon iconArrowDownLg" width="36" height="36" viewBox="0 0 36 36"><path d="M2 11h32L18 27 2 11Z"></path></svg> </button> </div> </div> <div class="answercell post-layout--right"> <div class="s-prose js-post-body" itemprop="text"> <p>您可以使用 flexbox 根据其父级设置您的 textarea 高度。</p> <p><strong>HTML</strong></p> <pre><code><div class="container"> <div class="btn-wrapper"> <button>X</button> </div> <textarea></textarea> </div> </code></pre> <p><strong>CSS</strong></p> <pre><code>.container { height: 220px; width: 220px; background-color: pink; display: flex; flex-direction: column; } .container textarea { box-sizing: border-box; /* fit parent width / height: 100%; } </code></pre> <p><a href="http://jsfiddle.net/b4Tt8/63/" rel="noreferrer">jsFiddle</a></p> </div> <div class="mt24"> <div class="user-action-time" style="color:#999;text-align:right;">于 2015-02-04T18:12:31.517 回答</div> </div> </div> </div> </div><a name="7"></a> <div id="answer-7" class="answer js-answer accepted-answer" data-answerid="7" data-parentid="4" data-score="506" data-position-on-page="1" data-highest-scored="1" data-question-has-accepted-highest-score="1" itemprop="suggestedAnswer" itemscope="" itemtype="https://schema.org/Answer"> <div class="post-layout"> <div class="votecell post-layout--left"> <div class="js-voting-container d-flex jc-center fd-column ai-stretch gs4 fc-black-200" data-post-id="7"> <button class="js-vote-up-btn flex--item s-btn s-btnunset c-pointer " data-controller="s-tooltip" data-s-tooltip-placement="right" aria-pressed="false" aria-label="Up vote" data-selected-classes="fc-theme-primary" data-unselected-classes="" aria-describedby="--stacks-s-tooltip-dgvag2l3"> <svg aria-hidden="true" class="svg-icon iconArrowUpLg" width="36" height="36" viewBox="0 0 36 36"><path d="M2 25h32L18 9 2 25Z"></path></svg> </button><div id="--stacks-s-tooltip-dgvag2l3" class="s-popover s-popovertooltip pe-none" aria-hidden="true" role="tooltip">This answer is useful<div class="s-popover--arrow"></div></div> <div class="js-vote-count flex--item d-flex fd-column ai-center fc-black-500 fs-title" itemprop="upvoteCount" data-value="1"> 1 </div> <button class="js-vote-down-btn flex--item s-btn s-btnunset c-pointer " data-controller="s-tooltip" data-s-tooltip-placement="right" aria-pressed="false" aria-label="Down vote" data-selected-classes="fc-theme-primary" data-unselected-classes="" aria-describedby="--stacks-s-tooltip-gn8ppsfv"> <svg aria-hidden="true" class="svg-icon iconArrowDownLg" width="36" height="36" viewBox="0 0 36 36"><path d="M2 11h32L18 27 2 11Z"></path></svg> </button> </div> </div> <div class="answercell post-layout--right"> <div class="s-prose js-post-body" itemprop="text"> <p>你为什么使用<code>display: table-row;</code>声明？没有必要这样做。删除<code>display: table-row;</code>声明，在你的 textarea 选择器中添加一个<code>box-sizing: border-box;</code>声明，你就完成了：</p> <pre><code>.container { height: 220px; width: 220px; background-color: pink; } .container > textarea { width: 100%; height: 100%; background-color: cyan; box-sizing: border-box; } .container > div { width: 100%; height: 100%; background-color: cyan; } </code></pre> <p><a href="http://jsfiddle.net/b4Tt8/10/" rel="nofollow">小提琴</a></p> <p>编辑：</p> <p>上面的 CSS 使文本区域溢出其父 div。</p> <p>这是一个更新的答案：</p> <h2>HTML</h2> <pre><code><div class="container"> <div class="button-wrapper"> <button>X</button> </div> <div class="textarea-wrapper"> <textarea></textarea> </div> </div> </code></pre> <h2>CSS 2</h2> <pre><code>.container { height: 220px; width: 220px; background-color: pink; position: absolute; } .container textarea { width: 100%; height: 100%; background-color: rgba(255, 255, 0, 0.5); box-sizing: border-box; } .container > div { background-color: cyan; } .container .button-wrapper { background-color: yellow; height: 26px; } .container .textarea-wrapper { background-color: green; position: absolute; top: 26px; width: 100%; bottom: 0; } </code></pre> <h2>CSS 3（使用 calc 函数）</h2> <pre><code>.container { height: 220px; width: 220px; background-color: pink; } .container textarea { width: 100%; height: 100%; background-color: rgba(255, 255, 0, 0.5); box-sizing: border-box; } .container > div { background-color: cyan; } .container .button-wrapper { background-color: yellow; height: 26px; } .container .textarea-wrapper { background-color: green; height: calc(100% - 26px); } </code></pre> <p>这是显示两种解决方案的小提琴：</p> <p><a href="http://jsfiddle.net/pjprp/" rel="nofollow">CSS 2</a></p> <p><a href="http://jsfiddle.net/6M8nZ/1/" rel="nofollow">CSS 3</a></p> </div> <div class="mt24"> <div class="user-action-time" style="color:#999;text-align:right;">于 2013-08-27T06:42:57.807 回答</div> </div> </div> </div> </div><a name="7"></a> <div id="answer-7" class="answer js-answer accepted-answer" data-answerid="7" data-parentid="4" data-score="506" data-position-on-page="1" data-highest-scored="1" data-question-has-accepted-highest-score="1" itemprop="suggestedAnswer" itemscope="" itemtype="https://schema.org/Answer"> <div class="post-layout"> <div class="votecell post-layout--left"> <div class="js-voting-container d-flex jc-center fd-column ai-stretch gs4 fc-black-200" data-post-id="7"> <button class="js-vote-up-btn flex--item s-btn s-btnunset c-pointer " data-controller="s-tooltip" data-s-tooltip-placement="right" aria-pressed="false" aria-label="Up vote" data-selected-classes="fc-theme-primary" data-unselected-classes="" aria-describedby="--stacks-s-tooltip-dgvag2l3"> <svg aria-hidden="true" class="svg-icon iconArrowUpLg" width="36" height="36" viewBox="0 0 36 36"><path d="M2 25h32L18 9 2 25Z"></path></svg> </button><div id="--stacks-s-tooltip-dgvag2l3" class="s-popover s-popovertooltip pe-none" aria-hidden="true" role="tooltip">This answer is useful<div class="s-popover--arrow"></div></div> <div class="js-vote-count flex--item d-flex fd-column ai-center fc-black-500 fs-title" itemprop="upvoteCount" data-value="0"> 0 </div> <button class="js-vote-down-btn flex--item s-btn s-btnunset c-pointer " data-controller="s-tooltip" data-s-tooltip-placement="right" aria-pressed="false" aria-label="Down vote" data-selected-classes="fc-theme-primary" data-unselected-classes="" aria-describedby="--stacks-s-tooltip-gn8ppsfv"> <svg aria-hidden="true" class="svg-icon iconArrowDownLg" width="36" height="36" viewBox="0 0 36 36"><path d="M2 11h32L18 27 2 11Z"></path></svg> </button> </div> </div> <div class="answercell post-layout--right"> <div class="s-prose js-post-body" itemprop="text"> <p>如果将固定高度设置为，<code>button</code>则可以使用定位并执行以下操作：</p> <p><strong>HTML</strong> : (<em>移除 br 标签</em>)</p> <pre><code><div class="container"> <button>X</button> <textarea></textarea> </div> <div class="container"> <button>X</button> <div>Text</div> </div> </code></pre> <p><strong>CSS</strong> </p> <pre><code>.container { height: 220px; width: 220px; background-color: pink; display: table; } .container > button { display: table-row; } .container > textarea, .container > div { display: table-row; border: none; / if you keep border then textarea will go out of the parent element / height: 200px; / hardcoded / padding: 0px; / removing padding for chrome */ width: 100%; background-color: cyan; } </code></pre> <p><strong><a href="http://jsfiddle.net/b4Tt8/16/" rel="nofollow">工作小提琴</a></strong></p> </div> <div class="mt24"> <div class="user-action-time" style="color:#999;text-align:right;">于 2013-08-27T06:38:14.967 回答</div> </div> </div> </div> </div></div> </div> <div id="sidebar" class="show-votes" role="complementary" aria-label="sidebar"> <div class="module sidebar-related"> <h4 id="h-related">Related</h4> <div class="related js-gps-related-questions" data-tracker="rq=1"> <div class="spacer"> <a href="/questions/11319033" title="Question score (upvotes 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