用边界半径隐藏的溢出仍然显示小边框

Question

我试图在图像上创建一个文本叠加层，我想为它添加一个轻微的边框半径。但我注意到，当将border-radius: 5px 和overflow: hidden 添加到父级时，叠加层后面的图像仍然在底角显示其边框的一小部分，就好像它忘记在那里隐藏一条像素化线一样。

（图像右下角的小灰线仍然可见）

.main-info {
  box-shadow: 0px 0px 3px 2px #221b25c7;
  border-radius: 5px;
  font-size: 0.75rem;
  overflow: hidden;
}

.main-info > .img {
  position: relative;
}

.text {
  position: absolute;
  display: flex;
  width: 100%;
  bottom: 0;
  -webkit-box-align: center;
  align-items: center;
  -webkit-box-pack: justify;
  justify-content: space-between;
  -webkit-transition: opacity 0.2s ease-out;
  transition: opacity 0.2s ease-out;
  opacity: 1;
  color: white;
  background-color: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(3px);
  z-index: 5;
  line-height: 25px;
}

.text > .limit {
  color: white;
  -webkit-box-flex: 1;
  -ms-flex: 1;
  flex: 1;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  position: relative;
  max-width: 100%;
  width: 0;
  padding: 0 0.5rem;
}

.text > .limit {
  text-align: center;
}

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<div class="row m-5">
  <div class="col-8">
    <div class="main-info">
      <div class="img">
        <a href="#">
          <div class="text">
            <div class="limit">Hello World</div>
          </div>
          <img src="https://placehold.it/272x154" style="width: 100%">
        </a>
      </div>
    </div>
  </div>
</div>

我曾想过只为孩子添加边框半径，但结果相同。

Answer 1

实际上我昨天发现了这个gist，这似乎是溢出项目边框问题的奇迹修复：

-webkit-mask-image: -webkit-radial-gradient(white, black);

Answer 2

您是否尝试添加：“！important”？

overflow: hidden !important;

还是清空缓存重新加载页面？：

Crtl + F5

Answer 3

这与其说是一种解决方案，不如说是一种技巧，但如果您覆盖的 5px x 5px 角（大致）是单一颜色，它会工作。

诀窍是绝对定位::before 和::after 伪元素以覆盖角落边缘，否则会发光。

工作示例：

.main-info {
  position: relative;
  box-shadow: 0px 0px 3px 2px #221b25c7;
  border-radius: 5px;
  font-size: 0.75rem;
  overflow: hidden;
}

.main-info::before,
.main-info::after {
  content: '';
  position: absolute;
  bottom: 0;
  z-index: 12;
  width: 5px;
  height: 5px;
  background-color: rgb(71, 71, 71);
}

.main-info::before {
  left: 0;
}

.main-info::after {
  right: 0;
}

.main-info > .img {
  position: relative;
}

.text {
  position: absolute;
  display: flex;
  width: 100%;
  bottom: 0;
  -webkit-box-align: center;
  align-items: center;
  -webkit-box-pack: justify;
  justify-content: space-between;
  -webkit-transition: opacity 0.2s ease-out;
  transition: opacity 0.2s ease-out;
  opacity: 1;
  color: white;
  background-color: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(3px);
  z-index: 5;
  line-height: 25px;
}

.text > .limit {
  color: white;
  -webkit-box-flex: 1;
  -ms-flex: 1;
  flex: 1;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  position: relative;
  max-width: 100%;
  width: 0;
  padding: 0 0.5rem;
}

.text > .limit {
  text-align: center;
}

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<div class="row m-5">
  <div class="col-8">
    <div class="main-info">
      <div class="img">
        <a href="#">
          <div class="text">
            <div class="limit">Hello World</div>
          </div>
          <img src="https://placehold.it/272x154" style="width: 100%">
        </a>
      </div>
    </div>
  </div>
</div>