Bootstrap 4 设置输入组输入的宽度

Question

你能帮我解决这个问题吗？我在 bootstrap 4 中有一个 input-group 。在我的 input-group 我有 2 个输入，第一个是前置，第二个是附加。

It’s wrapped in a col-12 div in a form-group and I need to set the width of the first input and second to some specific (但不同）价值。我试图在我的自定义 css 中设置 width ，但没有成功。可能吗？我知道，我可以通过将它与另一个 col 包装在一个 div 中来设置它，但是我在下面输入了两个输入，而不是并排输入。

代码：

 <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">

 <div class="form-group">
    <label for="telephone">Telephone</label>
      <div class="row">
         <div class="col-12">
            <div class="input-group telephone-input">
              <div class="input-group-prepend preselection-prepend">
                  <div class="input-group-text">+</div>
              </div>
              <input class="form-control" id="preselection" type="text" maxlength="3" name="preselection" placeholder="Preselection" autocomplete="off" required>
              <input class="form-control" id="telephone" placeholder="Telephone number" type="tel" maxlength="11" name="telephone" autocomplete="off" required>
              <span class="placeholder" id="tele-holder"></span>
              <div class="input-group-append" id="preselectionToggle">
              <div class="input-group-text">
                 <i class="far fa-plus-square"></i>
              </div>
            </div>
          </div>
       </div>
     </div>
  </div>

<script defer src="https://use.fontawesome.com/releases/v5.0.8/js/all.js" integrity="sha384-SlE991lGASHoBfWbelyBPLsUlwY1GwNDJo3jSJO04KZ33K2bwfV9YBauFfnzvynJ" crossorigin="anonymous"></script>

原文由 Ondřej Javorský 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 1

我找到了解决办法。我尝试设置最大宽度而不是仅设置宽度并且它有效。对于上面的例子，它将是：

 #preselection {
  max-width: 15%;
}

 <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">

 <div class="form-group">
    <label for="telephone">Telephone</label>
      <div class="row">
         <div class="col-12">
            <div class="input-group telephone-input">
              <div class="input-group-prepend preselection-prepend">
                  <div class="input-group-text">+</div>
              </div>
              <input class="form-control" id="preselection" type="text" maxlength="3" name="preselection" placeholder="Preselection" autocomplete="off" required>
              <input class="form-control" id="telephone" placeholder="Telephone number" type="tel" maxlength="11" name="telephone" autocomplete="off" required>
              <span class="placeholder" id="tele-holder"></span>
              <div class="input-group-append" id="preselectionToggle">
              <div class="input-group-text">
                 <i class="far fa-plus-square"></i>
              </div>
            </div>
          </div>
       </div>
     </div>
  </div>

<script defer src="https://use.fontawesome.com/releases/v5.0.8/js/all.js" integrity="sha384-SlE991lGASHoBfWbelyBPLsUlwY1GwNDJo3jSJO04KZ33K2bwfV9YBauFfnzvynJ" crossorigin="anonymous"></script>

原文由 Ondřej Javorský 发布，翻译遵循 CC BY-SA 3.0 许可协议

Answer 2

你可以用类 w-50 和 w-100

像这样

<div class="input-group">
   <div class="input-group-prepend w-50">
     <span class="input-group-text w-100">label</span>
   </div>
   <input type="text" class="form-control " />
</div>

原文由 ashkufaraz 发布，翻译遵循 CC BY-SA 4.0 许可协议