select {
width: 100%;
max-width: 100%;
box-sizing: border-box;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
option {
width: 100%;
box-sizing: border-box;
}
<div class="col-12">
<select>
<option value="">Choose an option</option>
<option>
In publishing and graphic design, Lorem ipsum is a placeholder text commonly used to demonstrate the visual form of a document or a typeface without relying on meaningful content. Lorem ipsum may be used as a placeholder before final copy is available.
</option>
<option>
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s,
</option>
<option>
It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using 'Content here
</option>
</select>
</div>
我的页面右侧有一个选择框。选项值的字长很长,所以它不适合屏幕,选项值变得比选择框本身更宽。我希望选项字段的大小与选择标签的大小相同。