image - 如何添加允许查看图像背景的边框 ("triangled")？

Question

由于很难解释，我将向您展示我假装的图像。

问题不在于“三 Angular 形”，而在于要在三 Angular 形生成的“空间”中显示的图像背景。

Answer 1

这是我的方法，如何处理这个任务。我将伪元素 :before 和 :after 与 transform: skewX(deg) 和 border-left 属性一起使用。这是代码片段:

.bg-arrow {
display: flex;
  justify-content: flex-end;
  background:url('http://wallpaperlepi.com/wp-content/uploads/2014/10/Stone-And-Star-Wallpaper.jpg') #ddd center center no-repeat;
  background-size: cover;
}

.arrow-shape{
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-around;
  width: 200px; 
  height: 100px;
  background-color: #fff;
}

.arrow-shape:before,
.arrow-shape:after{
  content: '';
  position: absolute;
  left: 0;
  height: 50%;
  width: 100%;
  background-color: #fff;
  border-left: 4px solid #000;
  z-index: 1;
}

.arrow-shape:before {
  top: 0;
    transform: skewX(15deg) translateX(-30px);
}

.arrow-shape:after {
    transform: skewX(-15deg) translateX(-30px);
  bottom: 0;
}

.arrow-shape .text {
  position: relative;
  text-align: center;
  z-index: 2;
}

<div class="bg-arrow">
  <div class="arrow-shape">
    <div class="text">
      Lorem ipsum dolor sit amet consectetur.
    </div>
  </div>
</div>