CSS：使用flex

Question

我正在尝试添加一个类来垂直对齐顶部，中间或底部，但我显然缺少一些东西：

＆＃13;

＆＃13;

.row {
	display: flex;
    background-color: #f0f0f0;
}
.col-3 {
	-ms-flex-preferred-size: 25%;
	flex-basis: 25%;
	max-width: 25%;	
}
[class*='col-'].col-top {
	align-items: flex-start;
}
[class*='col-'].col-center {
	align-items: center;
}
[class*='col-'].col-bottom {
	align-items: flex-end;
}

＆＃13;

<div class="row">
  
  <div class="col-3">
    Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
  </div>
  <div class="col-3 col-center">
    middle
  </div>
  <div class="col-3 col-bottom">
    right
  </div>
  
 </div>

＆＃13;

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Answer 1

您的列也需要display: flex：）

.row {
	display: flex;
    background-color: #f0f0f0;
}
.col-3 {
	-ms-flex-preferred-size: 25%;
	flex-basis: 25%;
	max-width: 25%;	
    display: flex;
}
[class*='col-'].col-top {
	align-items: flex-start;
  
}
[class*='col-'].col-center {
	align-items: center;
    background: #ff9000;
}
[class*='col-'].col-bottom {
	align-items: flex-end;
    background: #0099ff;
}

<div class="row">
  
  <div class="col-3">
    Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
  </div>
  <div class="col-3 col-center">
    middle
  </div>
  <div class="col-3 col-bottom">
    right
  </div>
  
 </div>