html – css透明形状覆盖图像

发布时间：2020-12-14 19:44:41 所属栏目：资源来源：网络整理

导读：This is what i am trying to achive 我有： #image1 { position: absolute; bottom: 0px; align-self: auto; background-color: #dc022e; width: 340px; height: 100px; border-radius: 50% / 100%; border-bottom-left-radius: 0; /*transform: rotate(10

This is what i am trying to achive

我有：

#image1 {
    position: absolute;
    bottom: 0px;
    align-self: auto;
    background-color: #dc022e;
    width: 340px;
    height: 100px;
    border-radius: 50% / 100%;
    border-bottom-left-radius: 0;
    /*transform: rotate(10deg);*/
    border-bottom-right-radius: 0;
    opacity: 0.8;
    }
    
    #image2 img {
    width: 80%;
    }

<div>
  <div id="image2">
    <img src="http://t1.gstatic.com/images?q=tbn:ANd9GcThtVuIQ7CBYssbdwtzZjVLI_uw09SeLmyrxaRQEngnQAked5ZB">
  </div>
  <div id="image1"></div>
</div>

最后我不知道如何使其旋转并且边缘切割如图所示

解决方法

一个简单的例子是使用伪元素并在背景中设置图像.

div {
  position: relative;
  height: 300px;
  width: 500px;
  background: url(http://lorempixel.com/500/300);/*image path*/
  overflow: hidden;/*hides the rest of the circle*/
}

div:before {
  content: "";
  position: absolute; /*positions with reference to div*/
  top: 100%;
  left: 50%;
  width: 0;/*define value if you didn't want hover*/
  height: 0;
  border-radius: 50%;
  background: tomato;/*could be rgba value (you can remove opacity then)*/
  opacity: 0.5;
  transform: translate(-50%,-50%);/*ensures it is in center of image*/
  transition: all 0.4s;
}


/*Demo Only*/
div:hover:before {/*place this in your pseudo declaration to remove the hover*/
  height: 100%;
  width: 150%;/*this makes the shape wider than square*/
  transform: translate(-50%,-50%) rotate(5deg);/*ensures it is in center of image + rotates*/
}
div {/*This stuff is for the text*/
  font-size: 40px;
  line-height: 300px;
  text-align: center;
}

<div>HOVER ME</div>

（编辑：李大同）

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