使轮播图标（预览和下一个）在悬停和访问时具有相同的颜色

Question

当我将鼠标悬停在其中一个轮播项目上（或单击它们）时，它们的颜色比未访问时更深。我希望它们在那些情况下具有相同的颜色。但是，我不知道该怎么做。我试过使用颜色和背景，但 none 进行了任何更改。

在此先感谢您对这位新手的帮助！

.container {
  padding: 15rem;
}

.wrapper {
  background-color: pink;
  width: 20rem;
  margin: 0 auto;
}


.carousel-inner {
  min-height: 150px;
}

.carousel-item {
  margin-block-start: 3.5rem;
}

p {
  text-align: center;
  margin: 0 2rem;
}

.carousel-indicators {
    display: none !important;
}

.carousel-icon {
    height: 20%;
    width: 20%;
    margin-bottom: 1rem;
    filter: invert(50%);
}

.carousel-icon:link,
.carousel-icon:visited,
.carousel-icon:hover,
.carousel-icon:active, {
  /* color: red; */
  /* background-color: red; */
  background: red;
}

<!DOCTYPE html>
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title>Carousel</title>

    <link rel="stylesheet" type="text/css" href="style-carousel.css">
    <link rel = "stylesheet" href = "https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css"integrity = "sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin = "anonymous">
  </head>

  <body>
    <!-- jQuery Library -->
    <script src = "https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity = "sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin = "anonymous">
    </script>

    <!-- Popper -->
    <script src = "https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity = "sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin = "anonymous">
    </script>

    <!-- Compiled and Minified Bootstrap JavaScript -->
    <script src = "https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity = "sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin = "anonymous">
    </script>


<div class="container">
  <div class="wrapper">
    <div id="myCarousel" class="carousel slide" data-ride="carousel">
      <ol class="carousel-indicators">
        <li data-target="myCarousel" data-slide-to="0" class="active"></li>
        <li data-target="myCarousel" data-slide-to="1"></li>
        <li data-target="myCarousel" data-slide-to="2"></li>
        <li data-target="myCarousel" data-slide-to="3"></li>
        <li data-target="myCarousel" data-slide-to="4"></li>
      </ol>
      <div class="carousel-inner">
        <div class="carousel-item active">
          <p>"Lorem ipsum dolor sit amet."</p>
        </div>
        <div class="carousel-item">
          <p>"In ornare quam viverra orci sagittis eu volutpat odio facilisis."</p>
        </div>
        <div class="carousel-item">
          <p>"Ullamcorper dignissim cras tincidunt lobortis."</p>
        </div>
        <div class="carousel-item">
          <p>"Sed velit dignissim sodales."</p>
        </div>
      </div>
      <a class="carousel-control-prev" href="#myCarousel" data-slide="prev">
        <span class="carousel-control-prev-icon carousel-icon"></span>
      </a>
      <a class="carousel-control-next" href="#myCarousel" data-slide="next">
        <span class="carousel-control-next-icon carousel-icon"></span>
      </a>
    </div>
  </div>
</div>


  </body>
</html>

Answer 1

您必须更改 不透明度 属性 carousel-control-prev 和 carousel -control-next class 用于 link 的各种状态，即其 link、已访问、活动和悬停 状态.默认情况下，这些 classes 的不透明度值设置为 0.5，因此在悬停时它会更改为 0.9，这就是为什么会发生变暗效果。

Answer 2

background-image是一个SVG，因此我建议您使用stroke="currentcolor"但是只有当你绝对必须处理这种情况时，你才能使用 drop-shadow() and translate() 将其添加到你的代码中：

.carousel-control-next, .carousel-control-prev {
    overflow: hidden;
    opacity: .99!important;
}
.carousel-control-prev-icon{
    filter: drop-shadow(32px 0px 0px red);
    transform: translate(-32px, 0px);
}
.carousel-control-next-icon{
    filter: drop-shadow(-32px 0px 0px red);
    transform: translate(32px, 0px);
}

如果您只是在谈论不透明度，那么只需添加：

.carousel-control-next, .carousel-control-prev { 
    opacity: .99!important;
}

这是一个演示

.container {
  padding: 15rem;
}

.wrapper {
  background-color: pink;
  width: 20rem;
  margin: 0 auto;
}


.carousel-inner {
  min-height: 150px;
}

.carousel-item {
  margin-block-start: 3.5rem;
}

p {
  text-align: center;
  margin: 0 2rem;
}

.carousel-indicators {
    display: none !important;
}

.carousel-icon {
    height: 20%;
    width: 20%;
    margin-bottom: 1rem; 
}

.carousel-icon:link,
.carousel-icon:visited,
.carousel-icon:hover,
.carousel-icon:active, {
  /* color: red; */
  /* background-color: red; */
  background: red;
}

.carousel-control-next, .carousel-control-prev {
    overflow: hidden;
    opacity: .99!important;
}
.carousel-control-prev-icon{
    filter: drop-shadow(32px 0px 0px red);
    transform: translate(-32px, 0px);
}
.carousel-control-next-icon{
    filter: drop-shadow(-32px 0px 0px red);
    transform: translate(32px, 0px);
}

<!DOCTYPE html>
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title>Carousel</title>

    <link rel="stylesheet" type="text/css" href="style-carousel.css">
    <link rel = "stylesheet" href = "https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css"integrity = "sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin = "anonymous">
  </head>

  <body>
    <!-- jQuery Library -->
    <script src = "https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity = "sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin = "anonymous">
    </script>

    <!-- Popper -->
    <script src = "https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity = "sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin = "anonymous">
    </script>

    <!-- Compiled and Minified Bootstrap JavaScript -->
    <script src = "https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity = "sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin = "anonymous">
    </script>


<div class="container">
  <div class="wrapper">
    <div id="myCarousel" class="carousel slide" data-ride="carousel">
      <ol class="carousel-indicators">
        <li data-target="myCarousel" data-slide-to="0" class="active"></li>
        <li data-target="myCarousel" data-slide-to="1"></li>
        <li data-target="myCarousel" data-slide-to="2"></li>
        <li data-target="myCarousel" data-slide-to="3"></li>
        <li data-target="myCarousel" data-slide-to="4"></li>
      </ol>
      <div class="carousel-inner">
        <div class="carousel-item active">
          <p>"Lorem ipsum dolor sit amet."</p>
        </div>
        <div class="carousel-item">
          <p>"In ornare quam viverra orci sagittis eu volutpat odio facilisis."</p>
        </div>
        <div class="carousel-item">
          <p>"Ullamcorper dignissim cras tincidunt lobortis."</p>
        </div>
        <div class="carousel-item">
          <p>"Sed velit dignissim sodales."</p>
        </div>
      </div>
      <a class="carousel-control-prev" href="#myCarousel" data-slide="prev">
        <span class="carousel-control-prev-icon carousel-icon"></span>
      </a>
      <a class="carousel-control-next" href="#myCarousel" data-slide="next">
        <span class="carousel-control-next-icon carousel-icon"></span>
      </a>
    </div>
  </div>
</div>


  </body>
</html>

使轮播图标（预览和下一个）在悬停和访问时具有相同的颜色

Make carousel icon (preview and next) have the same colour when hovered and visited

html

css

hover

carousel

bootstrap-4