如何将CSS功能区生成器代码用于特定特征图像

Question

我想从CSS功能区生成器中使用此代码，但仅需要某些特征图像 - 不是全部。

我有CSS和HTML。目前尚不清楚我将在我的孩子主题中包含哪个文件以使CSS工作。

我只想要某些特色图像的色带。我看到的所有插件都过时了。

.box {
  width: 200px; height: 300px;
  position: relative;
  border: 1px solid #BBB;
  background: #EEE;
}
.ribbon {
  position: absolute;
  right: -5px; top: -5px;
  z-index: 1;
  overflow: hidden;
  width: 75px; height: 75px;
  text-align: right;
}
.ribbon span {
  font-size: 10px;
  font-weight: bold;
  color: #FFF;
  text-transform: uppercase;
  text-align: center;
  line-height: 20px;
  transform: rotate(45deg);
  -webkit-transform: rotate(45deg);
  width: 100px;
  display: block;
  background: #79A70A;
  background: linear-gradient(#F70505 0%, #8F0808 100%);
  box-shadow: 0 3px 10px -5px rgba(0, 0, 0, 1);
  position: absolute;
  top: 19px; right: -21px;
}
.ribbon span::before {
  content: "";
  position: absolute; left: 0px; top: 100%;
  z-index: -1;
  border-left: 3px solid #8F0808;
  border-right: 3px solid transparent;
  border-bottom: 3px solid transparent;
  border-top: 3px solid #8F0808;
}
.ribbon span::after {
  content: "";
  position: absolute; right: 0px; top: 100%;
  z-index: -1;
  border-left: 3px solid transparent;
  border-right: 3px solid #8F0808;
  border-bottom: 3px solid transparent;
  border-top: 3px solid #8F0808;
}

<div class="box">
   <div class="ribbon"><span>PREMIUM</span></div>
</div>

如何添加此代码以与特定的特征图像一起使用？

您可以通过将其与其他图像分开，然后使用JS将色带添加到仅满足某些标准的图像中。

在这里，我正在使用featured类将图像与其他图像分开，然后使用JavaScript将ribbon类添加到这些图像中。

let feat = document.querySelectorAll('.featured')
feat.forEach((img)=>{
 img.classList.add('ribbon')
})

.box {
  width: 200px; height: 300px;
  position: relative;
  border: 1px solid #BBB;
  background: #EEE;
}
.ribbon {
  position: absolute;
  right: -5px; top: -5px;
  z-index: 1;
  overflow: hidden;
  width: 75px; height: 75px;
  text-align: right;
}
.ribbon span {
  font-size: 10px;
  font-weight: bold;
  color: #FFF;
  text-transform: uppercase;
  text-align: center;
  line-height: 20px;
  transform: rotate(45deg);
  -webkit-transform: rotate(45deg);
  width: 100px;
  display: block;
  background: #79A70A;
  background: linear-gradient(#F70505 0%, #8F0808 100%);
  box-shadow: 0 3px 10px -5px rgba(0, 0, 0, 1);
  position: absolute;
  top: 19px; right: -21px;
}
.ribbon span::before {
  content: "";
  position: absolute; left: 0px; top: 100%;
  z-index: -1;
  border-left: 3px solid #8F0808;
  border-right: 3px solid transparent;
  border-bottom: 3px solid transparent;
  border-top: 3px solid #8F0808;
}
.ribbon span::after {
  content: "";
  position: absolute; right: 0px; top: 100%;
  z-index: -1;
  border-left: 3px solid transparent;
  border-right: 3px solid #8F0808;
  border-bottom: 3px solid transparent;
  border-top: 3px solid #8F0808;
}

<div style="display:flex; justify-content: space-between; flex-wrap: wrap;">
<div class="box">
   <div class="featured"><span>PREMIUM</span></div>
</div>
<div class="box">
   <div class="featured"><span>PREMIUM</span></div>
</div>
<div class="box">
   <div class=""><span>PREMIUM</span></div>
</div>
<div class="box">
   <div class="featured"><span>PREMIUM</span></div>
</div>
<div class="box">
   <div class=""><span>PREMIUM</span></div>
</div>
<div class="box">
   <div class="featured"><span>PREMIUM</span></div>
</div>
</div>