Question

每个面板中的图像都有一个手风琴。我想在每个图像的顶部都放一个蓝色的覆盖物。我该怎么做？

CSS .panel-img的最后一部分是它的去向（我认为）

这是我的codepen

 <div class="slider-containers">
<div class="slider-container">
  <div class="flexbox-slider flexbox-slider-1">
    <div class="flexbox-slide">
      <img src="https://images.pexels.com/photos/1464213/pexels-photo-1464213.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=500" alt="Slide Image" class="panel-img">
      <div class="start">Engage</div>
      <div class="text-block">
        <h3>Engage</h3>
        <div class="text">
          <p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren</p>
        </div>
      </div>
    </div>
    <div class="flexbox-slide">
      <img src="https://images.pexels.com/photos/1350615/pexels-photo-1350615.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=500" alt="Slide Image"  class="panel-img">
      <div class="text-block">
        <h3>Educate</h3>
        <div class="text">
          <p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren</p>
        </div>
      </div>
    </div>
    <div class="flexbox-slide">
      <img src="https://images.pexels.com/photos/1093913/pexels-photo-1093913.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=500" alt="Slide Image" class="panel-img">
      <div class="text-block">
        <h3>Empower</h3>
        <div class="text">
          <p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren</p>
        </div>
      </div>
    </div>
  </div>
</div>

//variables
$slider-height: 500px;
$text-block-width: 400px;

$dark-font-color: #212121;
$accent-font-color: #CA9CE1;
$light-font-color: #fff;
$text-overlay-color: #000;
$text-overlay-opacity: 0.6;
$slide-overlay-color: #fff;
$slide-overlay-opacity: 0.6;

//transitions and mixins

//transitions mixin
@mixin transition-mix($property: all, $duration: 0.2s, $timing: linear, $delay: 0s) {
  transition-property: $property;
  transition-duration: $duration;
  transition-timing-function: $timing;
  transition-delay: $delay;
}

//position absolute mixin
@mixin position-absolute ($top: null, $left: null, $right: null, $bottom: null) {
  position: absolute;
  top: $top;
  left: $left;
  right: $right;
  bottom: $bottom;
}

/*common styles !!!YOU DON'T NEED THEM */


.container {
  width: 1100px;
  margin: 50px auto 0;


}

  .link {
    display: flex;
    justify-content: center;
    width: 800px;
    margin: 30px auto 0;

    a {
      @include transition-mix;

      display: flex;
      align-items: center;
      flex-shrink: 0;
      margin-right: 40px;
      color: inherit;
      font: {
        size: inherit;
      }
      text-decoration: none;

      &:hover {
        color: $accent-font-color;
      }

      &:last-child {
        margin-right: 0;
      }

      i {
        color: $accent-font-color;
        margin-right: 9px;
        font-size: 30px;
      }
    }
  }

.slider-containers {
  width: 100%;
  margin: 60px  ;
}

.slider-container {
  margin-bottom: 60px;

  h2 {
    text-align: center;
  }
}

.flexbox-slider {
  margin-top: 50px;
}

/*slide styles !!!YOU NEED THEM */
.flexbox-slider {
  display: flex;
  width: 100%;
  height: $slider-height;
  visibility: hidden;

  .flexbox-slide {
    @include transition-mix($duration: .3s);

    width: 33%;
    height: 100%;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    visibility: visible;
    transform: skewx(-8deg);

    //overlay
    &:after {
      @include position-absolute($top: 0, $left: 0);
      content: "";
      display: block;
      width: 100%;
      height: 100%;
      background-color: rgba($slide-overlay-color, $slide-overlay-opacity);
      z-index: 2;

      opacity: 0;
    }

    img {
      @include position-absolute($top: 50%, $left: 50%);
      height: auto;
      width: auto;
      min-width: 100%;
      min-height: 100%;
      transform: translate(-50%, -50%);
      z-index: -1;
    }

    .text-block {
      @include position-absolute($bottom: 30px, $left: 30px);
      max-width: $text-block-width;
      padding: 20px;
      border-radius: 5px;
      background-color: rgba($text-overlay-color, $text-overlay-opacity);
      color: $light-font-color;

      z-index: 4;

      visibility: hidden;
      opacity: 0;

      h3 {
        font: {
          size: 20px;
          weight: 700;
        }
      }
    }
  }

    &:hover {

    .flexbox-slide:hover {
      flex-shrink: 0;
      width: 80%;
    }
  }
}

/* effect  */
.flexbox-slider.flexbox-slider-1 {

  .flexbox-slide {

    .text-block {
      bottom: 60px;
    }
  }

  &:hover {

    .start {visibility:hidden}

    .flexbox-slide:hover {

      .text-block {
        @include transition-mix($delay: .5s);
        bottom: 30px;
        opacity: 1;
        visibility: visible;
      }
    }
  }
}
.start {font-weight: bold; color: black; font-size: 150%; z-index:1000; margin: 50px; 
}
.start:hover {color: green}
.panel-img {backgroud-color: rgba(0,0,255,.8)}
img.panel-img {height:500px !important; }

Answer 1

您可以使用div标签包裹图像标签，并使用rgba代码将背景色设置为蓝色[例如。 rgba（34，167，240，.5）]通过更改rgba的最后一个值来设置颜色的不透明度。

<div class="img-overlay">
   <img src="https://images.pexels.com/photos/1093913/pexels-photo-1093913.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=500" alt="Slide Image" class="panel-img">
</div>


.img-overlay {
  width: 100%;
  height: 100%;
  background: rgba(34, 167, 240, .5);
}

如何在图像上创建颜色叠加？

1 个答案: