Question

尝试从里面的图像中屏蔽底部三角形。（我希望看到三角形中的图像）中间水平向下

HTML

<div id="last-img">
    . . . image here . . .  
</div>

CSS

#last-img { 
  position: relative;
  overflow: visible;
  border-bottom: 10px solid white;
  border-color: white transparent white white; 
}

#last-img::before,
#last-img::after {
  content: '';
  display: block;
  position: absolute;
  bottom: -10px;
  right: -10px; left:auto;
  border: 10px solid white;
  border-color: transparent transparent white transparent;
}

#last-img::before {
  top: -10px;
  bottom: 50%;
}

#last-img::after {
  top: 50%;
  bottom: -10px;
}

Answer 1

我想你想要这样的东西。

body {
  text-align: center;
}
div {
  display: inline-block;
  margin: 2em;
  position: relative;
  background: #000;
}
div::before {
  content: '';
  width: calc(50% - 20px);
  border: 12px solid grey;
  position: absolute;
  bottom: 0;
  border-color: white transparent;
  border-width: 0 20px 20px 0;
}
div::after {
  content: '';
  width: calc(50% - 20px);
  border-style: solid;
  position: absolute;
  bottom: 0;
  right: 0;
  border-color: white transparent;
  border-width: 0 0 20px 20px;
}

<div>
  <img src="http://www.fillmurray.com/460/300" alt="" />
</div>

Answer 2

对于单个纯色三角形，只需要一个伪元素（在选择之前或之后）。

＆＃13;

#last-img {
  display: inline-block;
  position: relative;
}

#last-img::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 0 10px 10px;
  border-color: transparent transparent #fff transparent;
}

＆＃13;

<div id="last-img">
    <img src="http://dummyimage.com/100x100/000/fff" />
</div>

＆＃13;

掩盖图像底部的三角形

2 个答案: