html - 为什么我的 img 悬停不起作用？

Question

我试图将其设置为 opacity: .04;，当悬停在 opacity:1; 上时，我的 img 悬停不是运作。我不确定这是为什么。有人可以帮助我了解我的问题出在哪里吗？

我的 html:

.container2 {
  margin: 0px;
  padding: 0px;
}
.intro {
  width: 100%;
  position: relative;
  overflow: hidden;
  margin: 0;
  padding-top: 0;
}
.pic1 {
  position: absolute;
  top: 0;
  width: 100%;
  height: 100%;
}
.intro-img {
  display: block;
  margin: 0 auto;
  min-width: 100%;
  opacity: 0.4;
}
.pic1 img:hover {
  opacity: 1;
}
.wrapper {
  height: 200px;
  min-height: 200px;
  position: relative;
  padding-bottom: 0;
}
.blue {
  background: #22428e;
  color: #fff;
}
.green {
  background: #de0e00;
  color: #fff;
}
#colors-content {
  height: 200px;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  width: 330px;
  padding: 0 25px;
  margin-left: 3em;
}
h1 {
  text-transform: uppercase;
  font: 700 32px/35px'Gotham SSm A', 'Gotham SSm B', Arial, Helvetica, sans-serif;
  margin: 0 0 34px;
  padding-top: 28px;
}
p {
  margin-top: -10px;
}
a {
  text-decoration: none;
  color: white;
}
a:hover {
  color: black;
}
@media screen and (max-width: 454px) {
  .wrapper {
    min-height: 100px;
    position: relative;
  }
  #colors-content {
    height: 200px;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    width: 100%;
    padding: 0 25px;
    margin-left: -4px;
  }
  #pic1 {
    display: none;
  }
}

<div class="container2">
  <div class="intro">
    <div class="pic1">
      <img class="intro-img" src="https://s23.postimg.org/94clk2prf/resources_gender_spectrum2.png">
    </div>
    <!-- End pic1 -->
    <div class="wrapper">
      <article class="blue" id="colors-content">
        <div>
          <a href="">
            <h1> Gender
          Spectrum.com </h1> 
          </a>
          <p>I'm gone so i'me gone so long hah haha aha im bout it fuck it aiash hth as jasd ashd as ahsdjas r ajsgda uaju ashd ujawh uu ajshdhuiae</p>
        </div>
      </article>
      <!-- End of article -->
    </div>
    <!-- End wrapper -->
  </div>
  <!-- End intro -->
</div>
<! -- End of container2 -->

Answer 1

您的代码中有两种可能性，如果您只想通过将鼠标悬停在该背景上来使背景图像的不透明度为 1，那么您的代码如下:

.container2 {
  margin: 0px;
  padding: 0px;
}
.intro {
width: 100%;
position: relative;
overflow: hidden;
  margin: 0;
  padding-top: 0;
}
#pic1 {
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
}
.intro-img {
      display: block;
    margin: 0 auto;
    min-width: 100%;
  opacity: 0.4;
}
#pic1 img:hover{
  opacity: 1;
}
.wrapper {
  height: 200px;
    min-height: 200px;
    position: relative;
  padding-bottom: 0;
    margin-left: 3em;
    width: 330px;
}
.blue {
   background: #22428e;
    color: #fff;
}
.green{
     background: #de0e00;
    color: #fff;
}
#colors-content {
    height: 200px;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    width: 330px;
    padding: 0 25px;
}
h1 {
      text-transform: uppercase;
    font: 700 32px/35px 'Gotham SSm A','Gotham SSm B',Arial,Helvetica,sans-serif;
    margin: 0 0 34px;
  padding-top: 28px;
}
p {
  margin-top: -10px;
}
a {
  text-decoration: none;
  color: white;
}
a:hover {
  color: black;
}
@media screen and (max-width: 454px) { 
  .wrapper {
    min-height: 100px;
    position: relative;
}
#colors-content {
  height: 200px;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    width: 100%;
    padding: 0 25px;
margin-left: -4px;
}
  #pic1 {
    display: none;
}
}

<div class="container2">
<div class="intro">
  <div id="pic1">
     <img class="intro-img" src="https://s23.postimg.org/94clk2prf/resources_gender_spectrum2.png">
    </div> <!-- End pic1 -->
<div class="wrapper">
<article class="blue" id="colors-content">
  <div>
    <a href=""> <h1> Gender
      Spectrum.com </h1> </a>
    <p> I'm gone so i'me gone so long hah haha aha im bout it fuck it aiash  hth as jasd ashd as ahsdjas r ajsgda  uaju ashd ujawh uu ajshdhuiae</p>
  </div>
</article><!-- End of article -->
</div><!-- End wrapper -->
  </div> <!-- End intro -->
  </div> <! -- End of container2 -->

如果你想在将鼠标悬停在前面的蓝色包装上并将鼠标悬停在背景上后将背景不透明度设置为 1，则代码如下:

.container2 {
  margin: 0px;
  padding: 0px;
}
.wrapper:hover + div#pic1 img.intro-img {
    opacity: 1;
}
.intro {
width: 100%;
position: relative;
overflow: hidden;
  margin: 0;
  padding-top: 0;
}
#pic1 {
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
}
.intro-img {
      display: block;
    margin: 0 auto;
    min-width: 100%;
  opacity: 0.4;
}
#pic1 img:hover{
  opacity: 1;
}
.wrapper {
  height: 200px;
    min-height: 200px;
    position: relative;
  padding-bottom: 0;
    margin-left: 3em;
    width: 330px;
    z-index: 9;
}
.blue {
   background: #22428e;
    color: #fff;
}
.green{
     background: #de0e00;
    color: #fff;
}
#colors-content {
    height: 200px;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    width: 330px;
    padding: 0 25px;
}
h1 {
      text-transform: uppercase;
    font: 700 32px/35px 'Gotham SSm A','Gotham SSm B',Arial,Helvetica,sans-serif;
    margin: 0 0 34px;
  padding-top: 28px;
}
p {
  margin-top: -10px;
}
a {
  text-decoration: none;
  color: white;
}
a:hover {
  color: black;
}
@media screen and (max-width: 454px) { 
  .wrapper {
    min-height: 100px;
    position: relative;
}
#colors-content {
  height: 200px;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    width: 100%;
    padding: 0 25px;
margin-left: -4px;
}
  #pic1 {
    display: none;
}
}

<div class="container2">
<div class="intro">
<div class="wrapper">
<article class="blue" id="colors-content">
  <div>
    <a href=""> <h1> Gender
      Spectrum.com </h1> </a>
    <p> I'm gone so i'me gone so long hah haha aha im bout it fuck it aiash  hth as jasd ashd as ahsdjas r ajsgda  uaju ashd ujawh uu ajshdhuiae</p>
  </div>
</article><!-- End of article -->
</div><!-- End wrapper -->
  <div id="pic1">
     <img class="intro-img" src="https://s23.postimg.org/94clk2prf/resources_gender_spectrum2.png">
    </div> <!-- End pic1 -->

  </div> <!-- End intro -->
  </div> <! -- End of container2 -->