javascript - 如何修复我的悬停效果以突出显示所选元素？

Question

我正在尝试在悬停时突出显示一个元素，同时降低其他元素的“亮度”，因此重点放在悬停元素上。我的商品由图片、尺寸选择器和添加到购物车按钮组成。我想要的是当鼠标悬停在其中任何一个部分上时，这三个部分同时突出显示。我只想用 CSS 来做到这一点，并设法让我想要的有点工作，除非鼠标悬停在添加到购物车按钮或选择器上，只有那些元素会突出显示。这是我的 CSS:

   #Productlist {
      list-style-type: none;
      position: relative;
      display: inline-block;
      margin-top: 100px;
    }

    .Product img {
      width: 350px; 
      height: 400px;
      display: inline-block;
      position: relative;
      left: 50px;
      margin-top: 100px;
    }

    .Product:hover img {
      opacity: 1;
    }

    #Productlist:hover img{
      opacity: 0.5;
      -webkit-transition: .3s ease-in-out;
      transition: .3s ease-in-out;
    } 

    .Product button {
      background-color: #141516;
      position: relative;
      right: 134px;
      display: inline-block;
      z-index: 1;
      padding: 15px 45px;
      line-height: 1.8;
      text-align:center;
      text-transform:uppercase;
      font-size:0.8rem;
      font-weight:600;
      -webkit-transition: all 0.3s;
      -moz-transition: all 0.3s;
      transition: all 0.3s;
      border: 3px solid white;
    }

    .Product button a {

      position:relative;
      padding:0px;
      text-align:center;
      text-transform:uppercase;
      color:#888888;
      font-size:0.8rem;
      font-weight:600;
      line-height:60px;
      -webkit-transition: all 0.3s;
      -moz-transition: all 0.3s;
      transition: all 0.3s;

    }

    .Product button:hover a {

      color:red;
      z-index: 1000;
    }

    .Product button:hover {

      color:black;
      background-color: white;
      border: 1px solid white;
    }

    #size{
      display: inline-block;
      z-index: 1;
      color: white;
      position: relative;
      right: 484px;
      border: 3px solid white;
      width: 120px;
      height: 40px;
      border-radius: 3px;
      overflow: hidden;
      background: #141516 url("img/icon-select.png") no-repeat 90% 50%;
    }

    #size:focus {
      outline: none;
    }

这是我的 HTML:

    <div className='Webshop' id='Webshop'>
        <li id="Productlist">
            <div className='Product'>
              <img src={Seltzshirt}></img>
              <button onClick={this.handleClick} className="addit">Add to cart</button>
              <select id="size" onChange={this.change} value={this.state.value}>
                <option value="medium">Medium</option>
                <option value="large">Large</option>
                <option value="x-large">X-large</option>
              </select>
            </div>
            <div className='Product'>  
              <img src={Seltzshirt}></img>
              <button onClick={this.handleClick} className="addit">Add to cart</button>
              <select id="size" onChange={this.change} value={this.state.value}>
                <option value="medium">Medium</option>
                <option value="large">Large</option>
                <option value="x-large">X-large</option>
              </select>
            </div>
        </li>
    </div>

更新

我更新了我的 CSS 和 HTML 以显示我所做的一些更改并应用了 Michael Coker 的建议。现在，当我将鼠标悬停在图像、按钮或选择器上时，所有图像都会变暗，而选择器和按钮都会保持突出显示。为什么我的 .Product img 在悬停时忽略更改 opacity: 1;？

我制作了这个 CodePen 来展示我的问题:https://codepen.io/Feners4/pen/xdQmyQ

Answer 1

使用 #Productlist:hover img { opacity: .5; 更改所有图像的不透明度}，并使用 #Product:hover img { opacity: 1; 排除当前的。 }

#Productlist {
  list-style-type: none;
  position: relative;
  display: inline-block;
  margin-top: 100px;
}

#Product img {
  width: 350px;
  height: 400px;
  display: inline-block;
  position: relative;
  left: 50px;
  margin-top: 100px;
}

#Productlist:hover img {
  opacity: 0.5;
  -webkit-transition: .3s ease-in-out;
  transition: .3s ease-in-out;
}

#Product:hover img {
  opacity: 1;
}

#Webshop button {
  background-color: #141516;
  position: relative;
  right: 134px;
  display: inline-block;
  z-index: 1;
  padding: 15px 45px;
  line-height: 1.8;
  text-align: center;
  text-transform: uppercase;
  font-size: 0.8rem;
  font-weight: 600;
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  transition: all 0.3s;
  border: 3px solid white;
}

#Webshop button a {
  position: relative;
  padding: 0px;
  text-align: center;
  text-transform: uppercase;
  color: #888888;
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 60px;
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  transition: all 0.3s;
}

#Webshop button:hover a {
  color: red;
  z-index: 1000;
}

#Webshop button:hover {
  color: black;
  background-color: white;
  border: 1px solid white;
}

#size {
  display: inline-block;
  z-index: 1;
  color: white;
  position: relative;
  right: 484px;
  border: 3px solid white;
  width: 120px;
  height: 40px;
  border-radius: 3px;
  overflow: hidden;
  background: #141516 url("img/icon-select.png") no-repeat 90% 50%;
}

#size:focus {
  outline: none;
}

<div className='Webshop' id='Webshop'>
  <li id="Productlist">
    <div id='Product'>
      <img src=http://kenwheeler.github.io/slick/img/lazyfonz2.png></img>
      <button onClick={this.handleClick} className="addit">Add to cart</button>
      <select id="size" onChange={this.change} value={this.state.value}>
                <option value="medium">Medium</option>
                <option value="large">Large</option>
                <option value="x-large">X-large</option>
              </select>
    </div>
    <div id='Product'>
      <img src=http://kenwheeler.github.io/slick/img/lazyfonz2.png></img>
      <button onClick={this.handleClick} className="addit">Add to cart</button>
      <select id="size" onChange={this.change} value={this.state.value}>
                <option value="medium">Medium</option>
                <option value="large">Large</option>
                <option value="x-large">X-large</option>
              </select>
    </div>
    <div id='Product'>
      <img src=http://kenwheeler.github.io/slick/img/lazyfonz2.png></img>
      <button onClick={this.handleClick} className="addit">Add to cart</button>
      <select id="size" onChange={this.change} value={this.state.value}>
                <option value="medium">Medium</option>
                <option value="large">Large</option>
                <option value="x-large">X-large</option>
              </select>
    </div>
    <div id='Product'>
      <img src=http://kenwheeler.github.io/slick/img/lazyfonz2.png></img>
      <button onClick={this.handleClick} className="addit">Add to cart</button>
      <select id="size" onChange={this.change} value={this.state.value}>
                <option value="medium">Medium</option>
                <option value="large">Large</option>
                <option value="x-large">X-large</option>
              </select>
    </div>
  </li>
</div>