透明径向梯度问题

Question

我是新来的CSS渐变，并试图抓住它，我试图应用一个白色透明的css渐变包围一个圆形div的边界与背景图像。不幸的是，我得到的效果不是我想要的效果，我怎么能让它让图像看起来不那么被梯度遮挡，梯度也不像它那么宽，我想让它只影响图像的边界，比如也许外环大约30像素深。

我的代码：

.transparent-gradient::after {
  content: "";
  background-image: radial-gradient(ellipse at center, rgba(255,255,255,0) 0%,rgba(255,255,255,1) 100%);
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  }
  .transparent-gradient{
  width:300px; height:300px; margin:20px 0px; align-self:center;position:relative; overflow:hidden; background-color:red;border-radius:50%; background-size:cover; background-position:center; background-image:url('https://images.unsplash.com/photo-1530279281203-4c60af01ee58?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=02b66d237286bcb2a071ed6c1e72adf3&auto=format&fit=crop&w=1950&q=80');
  }

<div class="transparent-gradient" style=""></div>

Answer 1

.transparent-gradient::after {
  content: "";
  background: radial-gradient(ellipse at center, rgba(255,255,255,0) 40%,rgba(255,255,255,.9) 100%);
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}

.transparent-gradient{
  width:300px; 
  height:300px; 
  margin:20px 0px; 
  align-self:center;
  position:relative; 
  overflow:hidden; 
  background-color:red;
  border-radius:50%; 
  background-size:cover; 
  background-position:center; 
  background-image:url('https://images.unsplash.com/photo-1530279281203-4c60af01ee58?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=02b66d237286bcb2a071ed6c1e72adf3&auto=format&fit=crop&w=1950&q=80');
}

html lang-html prettyprint-override"><div class="transparent-gradient" style=""></div>