图像未在容器中缩放

Question

我正在尝试解决一个问题，即我已经按照多个教程来了解如何在容器内生成图像。我做了我觉得我能做的一切，但由于某种原因，图像仍然没有填满方块。

我也尝试使用CSS导入图像并使用背景：cover;属性。

如何使此图像填充左栏，文本保留在右侧？

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#about .container {
  background-color: #fff;
  padding: 0;
  height: 300px;
  margin: 20px auto;
  text-align: center;
  box-shadow: 0px 0px 40px -10px rgba(59, 66, 71, 1);
  border: 0.5px solid #72A7A3;
}

.about-photo img {
  width: 100%;
  height: auto;
}

＆＃13;

<section id="about">
  <div class="container-fluid">
    <div class="container col-6">
      <div class="row">
        <div class="col-5 about-photo">
          <img src="img/avatar.jpg" class="img-fluid">
        </div>
        <div class="col-7 about-text">
          <h1>Hi, I'm <span class="text-primary">Oliver Stott</span></h1>
          <p>thisi s a test </p>
        </div>
      </div>
    </div>
  </div>
</section>

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Answer 1

如果您希望图片适合父元素，只需将w-100类添加到img。

<section id="about">
 <div class="container-fluid">
     <div class="container col-6">
         <div class="row">
            <div class="col-5 about-photo">       <img src="img/avatar.jpg" class="img-fluid w-100"> 
          </div> 
         <div class="col-7 about-text"> 
            <h1>Hi, I'm 
           <span class="text-primary">Oliver Stott</span>
           </h1> 
         <p>this is a test </p>
 </div> 
</div> 
</div>
 </div>
 </section>

Answer 2

你已经知道了容器的高度，

试试这个

1）如果你不想在调整大小时拉伸图像，

#about .container {
  background-color: #fff;
  padding: 0;
  height: 300px;
  margin: 20px auto;
  text-align: center;
  box-shadow: 0px 0px 40px -10px rgba(59, 66, 71, 1);
  border: 0.5px solid #72A7A3;
}

.about-photo .img {
  width: 100%;
  height: 300px;
  background: #eee url('https://images.pexels.com/photos/66997/pexels-photo-66997.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=650&w=940');
  -webkit-background-size: cover;
  background-size: cover;
}

<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" rel="stylesheet"/>
<section id="about">
  <div class="container-fluid">
    <div class="container col-6">
      <div class="row">
        <div class="col-5 about-photo">
          <!-- <img src="https://images.pexels.com/photos/66997/pexels-photo-66997.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=650&w=940" class="img-fluid"> -->
          <div class="img"></div>
        </div>
        <div class="col-7 about-text">
          <h1>Hi, I'm <span class="text-primary">Oliver Stott</span></h1>
          <p>thisi s a test </p>
        </div>
      </div>
    </div>
  </div>
</section>

2）如果拉伸很好，请执行以下操作： 变化

.about-photo img {

 height: 100%; // from auto to 100%
}  

并添加

#about .container .row{
 height: 100%
} 

#about .container {
  background-color: #fff;
  padding: 0;
  height: 300px;
  margin: 20px auto;
  text-align: center;
  box-shadow: 0px 0px 40px -10px rgba(59, 66, 71, 1);
  border: 0.5px solid #72A7A3;
}

.about-photo img {
  width: 100%;
  height: 100%;
}

#about .container .row{
  height: 100%
} 

<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" rel="stylesheet"/>
<section id="about">
  <div class="container-fluid">
    <div class="container col-6">
      <div class="row">
        <div class="col-5 about-photo">
          <img src="https://images.pexels.com/photos/66997/pexels-photo-66997.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=650&w=940" class="img-fluid">
        </div>
        <div class="col-7 about-text">
          <h1>Hi, I'm <span class="text-primary">Oliver Stott</span></h1>
          <p>thisi s a test </p>
        </div>
      </div>
    </div>
  </div>
</section>

Answer 3

这应该有效：

.about-photo 
{ background-image : url(img/avatar.jpg); 
background-size: cover;
}