我有一个聚光灯圆圈,我试图把它放在屏幕的左下角,使覆盖层具有完整的高度和宽度,但它不能完美工作,下面是代码:

.spotlight{
display: block;
  float: left;
  background: radial-gradient(10px 10px at 110px 30px, transparent 0, transparent 60px, rgba(0, 0, 0, 0.5) 65px);
  background: -moz-radial-gradient(10px 10px at 400px 30px, transparent 0, transparent 95px, rgba(0, 0, 0, 0.5) 100px);
  background: -webkit-radial-gradient(10px 10px at 400px 30px, transparent 0, transparent 95px, rgba(0, 0, 0, 0.5) 100px);
  background: -o-radial-gradient(10px 10px at 400px 30px, transparent 0, transparent 95px, rgba(0, 0, 0, 0.5) 100px);
  height: 100%;
  pointer-events: none;
  position: absolute;
  width: 100%;
  z-index: 100000000;
  bottom: 0px;
  }

<div class="spotlight"></div>

最佳答案

您可以如下更正渐变:
从左边应该是65px,从上面应该是100% - 65px。(您可以用任何想要的值替换65px

.spotlight{
  background: radial-gradient(10px 10px at 65px calc(100% - 65px), transparent 0, transparent 60px, rgba(0, 0, 0, 0.5) 65px);
  height: 100%;
  pointer-events: none;
  position: absolute;
  top:0;
  left:0;
  width: 100%;
  z-index: 100000000;
  bottom: 0px;
  }

<div class="spotlight"></div>

您也可以这样简化:
.spotlight{
  background: radial-gradient(circle at 65px calc(100% - 65px), transparent 60px, rgba(0, 0, 0, 0.5) 65px);
  height: 100%;
  pointer-events: none;
  position: absolute;
  top:0;
  left:0;
  width: 100%;
  z-index: 100000000;
  bottom: 0px;
  }

<div class="spotlight"></div>

09-25 16:17