div中的垂直居中元素-CSS

分类：编程问答

如何解决div中的垂直居中元素-CSS

我需要在div中垂直放置内容。第二个div SEEMS要​​居中，但第一个不居中。我需要将他们（包括他们的孩子）在内的两个人垂直放在div内。

示例：

[type='file'] {
  border: 0;
  clip: rect(0,0);
  height: 1px;
  overflow: hidden;
  padding: 0;
  position: absolute !important;
  white-space: nowrap;
  width: 1px;
  &:focus {
    +label {
      box-shadow: 0 0 0 1px #137cbd,0 0 0 3px rgba(19,124,189,0.3) !important;
    }
  }
}

.PcYqm {
  box-sizing: border-box;
  padding-bottom: 5px;
  margin: 10px;
  background: red;
}

.UtilClasses_NO_MARGINS__lwdL1 {
  margin: 0 !important;
}

.gYoMm {
  box-sizing: border-box;
}

.eZmlQJ {
  box-sizing: border-box;
  padding-top: 5px;
  margin: 10px;
  background: green;
}

.bcHrqA {
  box-sizing: border-box;
  margin-left: 10px;
  margin-right: 10px;
}
<!-- Style dependencies -->
<link href="https://unpkg.com/normalize.css@^7.0.0" rel="stylesheet" />
<!-- Blueprint stylesheets -->
<link href="https://unpkg.com/@blueprintjs/icons@^3.4.0/lib/css/blueprint-icons.css" rel="stylesheet" />
<link href="https://unpkg.com/@blueprintjs/core@^3.10.0/lib/css/blueprint.css" rel="stylesheet" />
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" integrity="sha384-JcKb8q3iqJ61gNV9KGb8thSsNjpSL0n8PARn9HuZOnIxN0hoP+VmmDGMN5t9UJ0Z" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.1/dist/umd/popper.min.js" integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js" integrity="sha384-B4gt1jrGC7Jh4AgTPSdUtOBvfO8shuf57BaghqFfPlYxofvL8/KUEfYiJOMMV+rV" crossorigin="anonymous"></script>

<div class="bp3-card bp3-elevation-1 p-2">
  <div class="src__Box-sc-1sbtrzs-0 PcYqm">
    <div class="container">
      <div class="justify-content-between row h-100">
        <div class="d-flex col-4">
          <div class="bp3-button-group align-items-center"><span class="bp3-popover-wrapper"><span class="bp3-popover-target"><span icon="help" tabindex="0" class="bp3-icon bp3-icon-help bp3-intent-primary"><svg data-icon="help" width="16" height="16" viewBox="0 0 16 16">
                            <desc>help</desc>
                            <path d="M8 0C3.58 0 0 3.58 0 8s3.58 8 8 8 8-3.58 8-8-3.58-8-8-8zm1 13H7v-2h2v2zm1.93-6.52c-.14.32-.35.64-.62.97L9.25 8.83c-.12.15-.24.29-.28.42-.04.13-.09.3-.09.52V10H7.12V8.88s.05-.51.21-.71L8.4 6.73c.22-.26.35-.49.44-.68.09-.19.12-.38.12-.58 0-.3-.1-.55-.28-.75-.18-.19-.44-.28-.76-.28-.33 0-.59.1-.78.29-.19.19-.33.46-.4.81-.03.11-.1.15-.2.14l-1.7-.25c-.12-.01-.16-.08-.14-.19.12-.82.46-1.47 1.03-1.94.57-.48 1.32-.72 2.25-.72.47 0 .9.07 1.29.22s.72.34 1 .59c.28.25.49.55.65.89.15.35.22.72.22 1.12s-.07.75-.21 1.08z" fill-rule="evenodd"></path>
                          </svg></span></span>
            </span>
            <h4 class="bp3-heading UtilClasses_NO_MARGINS__lwdL1 d-flex"><span class="src__Box-sc-1sbtrzs-0 bcHrqA">Export</span><img alt="" src="/static/media/export.846774e4.svg"></h4>
          </div>
        </div>
        <div class="col-auto align-items-center" style="
">
          <div class="src__Box-sc-1sbtrzs-0 gYoMm h-100"><input type="file" id="uploadFileExport" accept=".xlsm"><label for="uploadFileExport" class="bp3-button bp3-intent-primary"><span>Select file</span></label></div>
        </div>
      </div>
    </div>
  </div>
  <div class="src__Box-sc-1sbtrzs-0 eZmlQJ">
    <div class="container">
      <div class="justify-content-between row">
        <div class="d-flex col-4">
          <div class="bp3-button-group align-items-center"><span class="bp3-popover-wrapper"><span class="bp3-popover-target"><span icon="help" tabindex="0" class="bp3-icon bp3-icon-help bp3-intent-primary"><svg data-icon="help" width="16" height="16" viewBox="0 0 16 16">
                            <desc>help</desc>
                            <path d="M8 0C3.58 0 0 3.58 0 8s3.58 8 8 8 8-3.58 8-8-3.58-8-8-8zm1 13H7v-2h2v2zm1.93-6.52c-.14.32-.35.64-.62.97L9.25 8.83c-.12.15-.24.29-.28.42-.04.13-.09.3-.09.52V10H7.12V8.88s.05-.51.21-.71L8.4 6.73c.22-.26.35-.49.44-.68.09-.19.12-.38.12-.58 0-.3-.1-.55-.28-.75-.18-.19-.44-.28-.76-.28-.33 0-.59.1-.78.29-.19.19-.33.46-.4.81-.03.11-.1.15-.2.14l-1.7-.25c-.12-.01-.16-.08-.14-.19.12-.82.46-1.47 1.03-1.94.57-.48 1.32-.72 2.25-.72.47 0 .9.07 1.29.22s.72.34 1 .59c.28.25.49.55.65.89.15.35.22.72.22 1.12s-.07.75-.21 1.08z" fill-rule="evenodd"></path>
                          </svg></span></span>
            </span>
            <h4 class="bp3-heading UtilClasses_NO_MARGINS__lwdL1 d-flex"><span class="src__Box-sc-1sbtrzs-0 bcHrqA">Submit</span><img alt="" src="/static/media/submit.0c47fc11.svg"></h4>
          </div>
        </div>
        <div class="col-auto">
          <div class="src__Box-sc-1sbtrzs-0 gYoMm h-100"><input type="file" id="uploadFileSubmit" accept=".xlsm"><label for="uploadFileSubmit" class="bp3-button bp3-intent-primary"><span>Select file</span></label></div>
        </div>
      </div>
    </div>
  </div>
</div>

请咨询。我也可以使用引导程序。

解决方法

编辑：此处直接合并到您的HTML中。

[type='file'] {
  border: 0;
  clip: rect(0,0);
  height: 1px;
  overflow: hidden;
  padding: 0;
  position: absolute !important;
  white-space: nowrap;
  width: 1px;

  &:focus {
    + label {
      box-shadow: 0 0 0 1px #137cbd,0 0 0 3px rgba(19,124,189,0.3) !important;
    }
  }
}

.PcYqm {
    box-sizing: border-box;
    padding-bottom: 5px;
    margin: 10px;
    background: red;
}

.UtilClasses_NO_MARGINS__lwdL1 {
    margin: 0 !important;
}

.gYoMm {
  box-sizing: border-box;
}

.eZmlQJ {
    box-sizing: border-box;
    padding-top: 5px;
    margin: 10px;
    background: green;
}

.bcHrqA {
    box-sizing: border-box;
    margin-left: 10px;
    margin-right: 10px;
}
        <!-- Style dependencies -->
        <link href="https://unpkg.com/normalize.css@^7.0.0" rel="stylesheet" />
        <!-- Blueprint stylesheets -->
        <link href="https://unpkg.com/@blueprintjs/icons@^3.4.0/lib/css/blueprint-icons.css" rel="stylesheet" />
        <link href="https://unpkg.com/@blueprintjs/core@^3.10.0/lib/css/blueprint.css" rel="stylesheet" />
        <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" integrity="sha384-JcKb8q3iqJ61gNV9KGb8thSsNjpSL0n8PARn9HuZOnIxN0hoP+VmmDGMN5t9UJ0Z" crossorigin="anonymous">
        <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js" integrity="sha384-B4gt1jrGC7Jh4AgTPSdUtOBvfO8shuf57BaghqFfPlYxofvL8/KUEfYiJOMMV+rV" crossorigin="anonymous"></script>

        <div class="bp3-card bp3-elevation-1 p-2">
          <div class="src__Box-sc-1sbtrzs-0 PcYqm">
            <div class="container">
              <div class="justify-content-center align-items-center row p-2">
                <div class="d-flex col-4">
                  <div class="bp3-button-group align-items-center"><span class="bp3-popover-wrapper"><span class="bp3-popover-target"><span icon="help" tabindex="0" class="bp3-icon bp3-icon-help bp3-intent-primary"><svg data-icon="help" width="16" height="16" viewBox="0 0 16 16">
                            <desc>help</desc>
                            <path d="M8 0C3.58 0 0 3.58 0 8s3.58 8 8 8 8-3.58 8-8-3.58-8-8-8zm1 13H7v-2h2v2zm1.93-6.52c-.14.32-.35.64-.62.97L9.25 8.83c-.12.15-.24.29-.28.42-.04.13-.09.3-.09.52V10H7.12V8.88s.05-.51.21-.71L8.4 6.73c.22-.26.35-.49.44-.68.09-.19.12-.38.12-.58 0-.3-.1-.55-.28-.75-.18-.19-.44-.28-.76-.28-.33 0-.59.1-.78.29-.19.19-.33.46-.4.81-.03.11-.1.15-.2.14l-1.7-.25c-.12-.01-.16-.08-.14-.19.12-.82.46-1.47 1.03-1.94.57-.48 1.32-.72 2.25-.72.47 0 .9.07 1.29.22s.72.34 1 .59c.28.25.49.55.65.89.15.35.22.72.22 1.12s-.07.75-.21 1.08z" fill-rule="evenodd"></path>
                          </svg></span></span></span>
                    <h4 class="bp3-heading UtilClasses_NO_MARGINS__lwdL1 d-flex"><span class="src__Box-sc-1sbtrzs-0 bcHrqA">Export</span><img alt="" src="/static/media/export.846774e4.svg"></h4>
                  </div>
                </div>
                <div class="col-auto align-items-center" style="
">
                  <div class="src__Box-sc-1sbtrzs-0 gYoMm h-100"><input type="file" id="uploadFileExport" accept=".xlsm"><label for="uploadFileExport" class="bp3-button bp3-intent-primary"><span>Select file</span></label></div>
                </div>
              </div>
            </div>
          </div>
          <div class="src__Box-sc-1sbtrzs-0 eZmlQJ">
            <div class="container">
              <div class="justify-content-center align-items-center row p-2">
                <div class="d-flex col-4">
                  <div class="bp3-button-group align-items-center"><span class="bp3-popover-wrapper"><span class="bp3-popover-target"><span icon="help" tabindex="0" class="bp3-icon bp3-icon-help bp3-intent-primary"><svg data-icon="help" width="16" height="16" viewBox="0 0 16 16">
                            <desc>help</desc>
                            <path d="M8 0C3.58 0 0 3.58 0 8s3.58 8 8 8 8-3.58 8-8-3.58-8-8-8zm1 13H7v-2h2v2zm1.93-6.52c-.14.32-.35.64-.62.97L9.25 8.83c-.12.15-.24.29-.28.42-.04.13-.09.3-.09.52V10H7.12V8.88s.05-.51.21-.71L8.4 6.73c.22-.26.35-.49.44-.68.09-.19.12-.38.12-.58 0-.3-.1-.55-.28-.75-.18-.19-.44-.28-.76-.28-.33 0-.59.1-.78.29-.19.19-.33.46-.4.81-.03.11-.1.15-.2.14l-1.7-.25c-.12-.01-.16-.08-.14-.19.12-.82.46-1.47 1.03-1.94.57-.48 1.32-.72 2.25-.72.47 0 .9.07 1.29.22s.72.34 1 .59c.28.25.49.55.65.89.15.35.22.72.22 1.12s-.07.75-.21 1.08z" fill-rule="evenodd"></path>
                          </svg></span></span></span>
                    <h4 class="bp3-heading UtilClasses_NO_MARGINS__lwdL1 d-flex"><span class="src__Box-sc-1sbtrzs-0 bcHrqA">Submit</span><img alt="" src="/static/media/submit.0c47fc11.svg"></h4>
                  </div>
                </div>
                <div class="col-auto">
                  <div class="src__Box-sc-1sbtrzs-0 gYoMm h-100"><input type="file" id="uploadFileSubmit" accept=".xlsm"><label for="uploadFileSubmit" class="bp3-button bp3-intent-primary"><span>Select file</span></label></div>
                </div>
              </div>
            </div>
          </div>
        </div>

以前的帖子：

.container {
  background-color: #2196f3;
}

.container > .wrapper {
  padding: 3rem 0;
}

/* optional */

span {
  display: block;
 }
<div class="container">
  <div class="wrapper">
    <span class="item-1">
      Item 1
    </span>
    <span class="item-2">
      Item 2
    </span>
  </div>
</div>

有大约一千种方法可以使某物垂直居中，您可以使用flex-box，也可以使用position: absolute，top: 50%和transform: translateY(-50%)中的一种混合方法。 / p>

,

在您的css文件中，进行以下更改：

.PcYqm {
  box-sizing: border-box;
  padding-bottom: 5px;
  padding-top: 5px; // added this
  margin: 10px;
  background: red;
}

.eZmlQJ {
  box-sizing: border-box;
  padding-top: 5px;
  padding-bottom: 5px; // added this
  margin: 10px;
  background: green;
}

接下来在HTML标签中同时为“选择文件”添加此CSS：

<label for="uploadFileExport" style="margin-top: .5rem" ... 
<label for="uploadFileSubmit" style="margin-top: .5rem" ...

除了此内联CSS外，您还可以创建一个类，但可能无法正常工作，因为标签正在从Bootstrap标签继承CSS。

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