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CSS 文本在< textarea>中垂直居中

CSS 文本在中垂直居中</h1> <p>在本文中，我们将介绍如何使用CSS来在<code><textarea></code>中垂直居中文本。</p> <p><strong>阅读更多：<a class="wp-editor-md-post-content-link" href="https://geek-docs.com/css">CSS 教程</a></strong></p> <h2>什么是<textarea>标签？</h2> <p><code><textarea></code>标签是HTML中用于创建多行文本输入框的元素。与单行输入框不同，<code><textarea></code>可以接受多行文本输入。它的大小可以通过CSS来控制，并且可以通过<code><textarea></code>元素的属性来设置文本框的初始内容、行数和列数。</p> <h2>垂直居中文本</h2> <p>在默认情况下，<code><textarea></code>中的文本会在垂直方向上居中对齐。然而，如果我们希望在<code><textarea></code>中的文本完全垂直居中，我们可以使用CSS来实现。</p> <h3>使用line-height属性</h3> <p>一种简单的方法是使用<code>line-height</code>属性。通过将<code>line-height</code>设置为与文本框的高度相同的值，可以使文本完全垂直居中。</p> <pre><code class="language-css line-numbers">textarea { height: 200px; line-height: 200px; } </code></pre> <p>在上面的示例中，我们将<code><textarea></code>的高度设置为200px，并将<code>line-height</code>设置为200px。这将使文本在<code><textarea></code>中垂直居中。</p> <h3>使用flexbox布局</h3> <p>另一种方法是使用flexbox布局来垂直居中文本。使用flexbox布局需要将<code><textarea></code>包装在一个容器中。</p> <pre data-language=HTML><code class="language-markup line-numbers"><div class="container"> <textarea></textarea> </div> </code></pre> <pre><code class="language-css line-numbers">.container { display: flex; align-items: center; } textarea { height: 200px; width: 300px; } </code></pre> <p>在上面的示例中，我们使用flexbox布局将<code><textarea></code>包装在一个具有<code>display: flex</code>和<code>align-items: center</code>的容器中，以使文本垂直居中。</p> <h3>使用table-cell布局</h3> <p>我们还可以使用table-cell布局来垂直居中<code><textarea></code>中的文本。这种方法需要将<code><textarea></code>包装在一个<code><div></code>元素中，并使用CSS将其显示为表格单元格。</p> <pre data-language=HTML><code class="language-markup line-numbers"><div class="container"> <div class="table-cell"> <textarea></textarea> </div> </div> </code></pre> <pre><code class="language-css line-numbers">.container { display: table; width: 100%; height: 200px; } .table-cell { display: table-cell; vertical-align: middle; } textarea { width: 100%; height: auto; } </code></pre> <p>在上面的示例中，我们将外部容器显示为表格，并将其高度设置为200px。并且使用<code>display: table-cell</code>和<code>vertical-align: middle</code>将<code><textarea></code>包装在一个具有表格布局的单元格中，从而使其文本垂直居中。</p> <h2>总结</h2> <p>通过使用CSS，我们可以很容易地实现在<code><textarea></code>中垂直居中文本的效果。使用<code>line-height</code>属性、flexbox布局或table-cell布局都可以达到这一目的。根据实际情况选择适合的方法，并根据需要调整样式和尺寸以获得最佳效果。希望本文能帮助你在使用<code><textarea></code>时实现文本的垂直居中！</p> <div id="eaa_post_after_content" class="eaa-wrapper eaa_post_after_content eaa_desktop"><div class="eaa-ad " style=""><div class="wwads-cn wwads-vertical" data-id="297" style="margin:auto;"></div></div></div> </article>  <nav class="article-nav"> <span class="article-nav-prev" style="float:left;text-align:left">上一篇 <a href="https://geek-docs.com/css/css-ask-answer/259_css_css_sticky_footers_with_unknown_height.html" rel="prev">CSS 未知高度的粘性页脚</a></span> <span class="article-nav-next">下一篇 <a href="https://geek-docs.com/css/css-ask-answer/279_css_how_can_you_set_the_height_of_an_outer_div_to_always_be_equal_to_a_particular_inner_div.html" rel="next">CSS 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