使用 .align-self-*-stretch 类在不同屏幕上的 flex 容器中拉伸 flex 项目。
.align-self-stretch:
.align-self-stretch
.align-self-sm-stretch:
.align-self-sm-stretch
.align-self-md-stretch:
.align-self-md-stretch
.align-self-lg-stretch:
.align-self-lg-stretch
.align-self-xl-stretch:
.align-self-xl-stretch
.align-self-xxl-stretch:
.align-self-xxl-stretch