Question

祝你好运！我知道这是一个常见的问题并且已经解决了很多次但实际上我已经尝试了搜索引擎和stackoverflow返回给我的每个搜索解决方案，但我真的无法解决这个问题。

问题是当视图位于较小的设备中时会裁剪背景图像。

我尝试将html和正文设置为100％无效。我已经尝试将背景大小设置为100％100％无效。我试过这个链接CSS: Full Size background image，但仍无济于事。

这是css代码：

body {
    background-image: url(../img/bg2.jpg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    font-family: Josefin Sans Regular;
    color: white;

}

html {
    height: 100%;
}


#content {
    text-align: center;
    text-shadow: 0px 4px 3px rgba(0,0,0,1),
                 0px 8px 13px rgba(0,0,0,0.1),
                 0px 18px 23px rgba(0,0,0,0.1);
    padding-top: 25%;
}
#carHead {
    text-align: center;
}
h1 {
    font-weight: 700;
    font-size: 5em;
}
hr {
    width: 45%;
    background-color: #f8f8f8;
    border-top: 1px solid #f8f8f8;
    border-bottom: 1px solid rgb(0,0,0.02)
}
.carousel-item {
    padding: 20px;
}

这里是html代码的正文：

<body>
<!--head nav-->
    <nav class="navbar navbar-expand-lg navbar-light bg-light">
        <div class="container">
          <a class="navbar-brand" href="#">
            <i class="fas fa-desktop"></i>
            < logo
          </a>
          <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
            <span class="navbar-toggler-icon"></span>
          </button>

          <div class="collapse navbar-collapse" id="navbarSupportedContent">
            <ul class="navbar-nav mr-auto">
              <li class="nav-item active">
                <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
              </li>
              <li class="nav-item">
                <a class="nav-link" href="#">About</a>
              </li>
              <li class="nav-item ">
                <a class="nav-link " href="#">Contact Us</a>
              </li>
            </ul>
            <form class="form-inline my-2 my-lg-0">
              <input class="form-control mr-sm-2" type="text" placeholder="Username" aria-label="Search">
              <input class="form-control mr-sm-2" type="password" placeholder="Password" aria-label="Password">
              <button class="btn btn-outline-success my-2 my-sm-0" type="submit">
                <i class="fa fa-user" aria-hidden="true"></i> Login 
              </button>
            </form>
          </div>
        </div>
    </nav>
<!--end of head nav-->
    <div class="container">
        <div class="row">
            <div class="col-xs-12 col-lg-12">
                <div id="carHead">
                    <h1>Example of our works</h1>
                </div>
            </div>
        </div>
<!-- featured item carousel -->
        <div id="testcar" class="carousel slide" data-ride="carousel">
          <ol class="carousel-indicators">
            <li data-target="#testcar" data-slide-to="0" class="active"></li>
            <li data-target="#testcar" data-slide-to="1"></li>
            <li data-target="#testcar" data-slide-to="2"></li>
          </ol>
          <div class="carousel-inner">
            <div class="carousel-item active">
              <img class="d-block w-100" src="assets/img/w1.jpg"  height="350px" alt="First slide">
                <div class="carousel-caption d-none d-md-block">
                    <h5>Work/Template 1</h5>
                    <p>Use/What for</p>
                </div>
            </div>
            <div class="carousel-item">
              <img class="d-block w-100" src="assets/img/w2.jpg"  height="350px" alt="Second slide">
                <div class="carousel-caption d-none d-md-block">
                    <h5>Work/Template 2</h5>
                    <p>Use/What for</p>
                </div>
            </div>
            <div class="carousel-item">
              <img class="d-block w-100" src="assets/img/w3.jpg"  height="350px" alt="Third slide">
                <div class="carousel-caption d-none d-md-block">
                    <h5>Work/Template 3</h5>
                    <p>Use/What for</p>
                </div>
            </div>
          </div>
          <a class="carousel-control-prev" href="#testcar" role="button" data-slide="prev">
            <span class="carousel-control-prev-icon" aria-hidden="true"></span>
            <span class="sr-only">Previous</span>
          </a>
          <a class="carousel-control-next" href="#testcar" role="button" data-slide="next">
            <span class="carousel-control-next-icon" aria-hidden="true"></span>
            <span class="sr-only">Next</span>
          </a>
        </div>
    <!-- end of carousel-->
        <div class="row"> 
            <div class="col-xl-3 col-lg-3 col-md-4 col-sm-6 col-xs-12">
                <img class="img-thumbnail"src="assets/img/1.jpg">
            </div>
            <div class="col-xl-3 col-lg-3 col-md-4 col-sm-6 col-xs-12">
                <img class="img-thumbnail"src="assets/img/2.jpg">
            </div>
            <div class="col-xl-3 col-lg-3 col-md-4 col-sm-6 col-xs-12">
                <img class="img-thumbnail"src="assets/img/3.jpg">
            </div>
            <div class="col-xl-3 col-lg-3 col-md-4 col-sm-6 col-xs-12">
                <img class="img-thumbnail"src="assets/img/1.jpg">
            </div>
        </div>
    </div>
    <script type="text/javascript" src="assets/js/jquery-3.3.1.js"></script>
    <script type="text/javascript" src="assets/js/bootstrap.js"></script>
</body>

最后输出：

Answer 1

尝试使用min-height，因此不会从背景图像的底部裁剪。检查下面给出的示例代码。我在body css标签中给了min-height:745px。

＆＃13;

body {
    background-image: url(https://images.pexels.com/photos/236047/pexels-photo-236047.jpeg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    font-family: Josefin Sans Regular;
    color: white;
    min-height: 725px;
}

html {
    height: 100%;
}


#content {
    text-align: center;
    text-shadow: 0px 4px 3px rgba(0,0,0,1),
                 0px 8px 13px rgba(0,0,0,0.1),
                 0px 18px 23px rgba(0,0,0,0.1);
    padding-top: 25%;
}
#carHead {
    text-align: center;
}
h1 {
    font-weight: 700;
    font-size: 5em;
}
hr {
    width: 45%;
    background-color: #f8f8f8;
    border-top: 1px solid #f8f8f8;
    border-bottom: 1px solid rgb(0,0,0.02)
}
.carousel-item {
    padding: 20px;
}

＆＃13;

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<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>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>


<body>
<!--head nav-->
    <nav class="navbar navbar-expand-lg navbar-light bg-light">
        <div class="container">
          <a class="navbar-brand" href="#">
            <i class="fas fa-desktop"></i>
            
          </a>
          <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
            <span class="navbar-toggler-icon"></span>
          </button>

          <div class="collapse navbar-collapse" id="navbarSupportedContent">
            <ul class="navbar-nav mr-auto">
              <li class="nav-item active">
                <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
              </li>
              <li class="nav-item">
                <a class="nav-link" href="#">About</a>
              </li>
              <li class="nav-item ">
                <a class="nav-link " href="#">Contact Us</a>
              </li>
            </ul>
            <form class="form-inline my-2 my-lg-0">
              <input class="form-control mr-sm-2" type="text" placeholder="Username" aria-label="Search">
              <input class="form-control mr-sm-2" type="password" placeholder="Password" aria-label="Password">
              <button class="btn btn-outline-success my-2 my-sm-0" type="submit">
                <i class="fa fa-user" aria-hidden="true"></i> Login 
              </button>
            </form>
          </div>
        </div>
    </nav>
<!--end of head nav-->
    <div class="container">
        <div class="row">
            <div class="col-xs-12 col-lg-12">
                <div id="carHead">
                    <h1>Example of our works</h1>
                </div>
            </div>
        </div>
<!-- featured item carousel -->
        <div id="testcar" class="carousel slide" data-ride="carousel">
          <ol class="carousel-indicators">
            <li data-target="#testcar" data-slide-to="0" class="active"></li>
            <li data-target="#testcar" data-slide-to="1"></li>
            <li data-target="#testcar" data-slide-to="2"></li>
          </ol>
          <div class="carousel-inner">
            <div class="carousel-item active">
              <img class="d-block w-100" src="https://images.pexels.com/photos/531880/pexels-photo-531880.jpeg"  height="350px" alt="First slide">
                <div class="carousel-caption d-none d-md-block">
                    <h5>Work/Template 1</h5>
                    <p>Use/What for</p>
                </div>
            </div>
            <div class="carousel-item">
              <img class="d-block w-100" src="https://images.pexels.com/photos/531880/pexels-photo-531880.jpeg"  height="350px" alt="Second slide">
                <div class="carousel-caption d-none d-md-block">
                    <h5>Work/Template 2</h5>
                    <p>Use/What for</p>
                </div>
            </div>
            <div class="carousel-item">
              <img class="d-block w-100" src="https://images.pexels.com/photos/531880/pexels-photo-531880.jpeg"  height="350px" alt="Third slide">
                <div class="carousel-caption d-none d-md-block">
                    <h5>Work/Template 3</h5>
                    <p>Use/What for</p>
                </div>
            </div>
          </div>
          <a class="carousel-control-prev" href="#testcar" role="button" data-slide="prev">
            <span class="carousel-control-prev-icon" aria-hidden="true"></span>
            <span class="sr-only">Previous</span>
          </a>
          <a class="carousel-control-next" href="#testcar" role="button" data-slide="next">
            <span class="carousel-control-next-icon" aria-hidden="true"></span>
            <span class="sr-only">Next</span>
          </a>
        </div>
    <!-- end of carousel-->
        <div class="row"> 
            <div class="col-xl-3 col-lg-3 col-md-4 col-sm-6 col-xs-12">
                <img class="img-thumbnail"src="https://image.freepik.com/free-vector/modern-technological-elements-with-transparent-background_1035-7108.jpg">
            </div>
            <div class="col-xl-3 col-lg-3 col-md-4 col-sm-6 col-xs-12">
                <img class="img-thumbnail"src="https://image.freepik.com/free-vector/modern-technological-elements-with-transparent-background_1035-7108.jpg">
            </div>
            <div class="col-xl-3 col-lg-3 col-md-4 col-sm-6 col-xs-12">
                <img class="img-thumbnail"src="https://image.freepik.com/free-vector/modern-technological-elements-with-transparent-background_1035-7108.jpg">
            </div>
            <div class="col-xl-3 col-lg-3 col-md-4 col-sm-6 col-xs-12">
                <img class="img-thumbnail"src="https://image.freepik.com/free-vector/modern-technological-elements-with-transparent-background_1035-7108.jpg">
            </div>
        </div>
    </div>
    <script type="text/javascript" src="assets/js/jquery-3.3.1.js"></script>
    <script type="text/javascript" src="assets/js/bootstrap.js"></script>
</body>

＆＃13;

Answer 2

您可以使用object-fit属性（with growing support）在其容器中调整图像大小。示例如下：

.banner-image {
    overflow: hidden;
    object-fit: contain;
    height: 100%;
    width: 100%;
    max-height: 460px;
}

在较低分辨率视图下裁剪背景图像高度

2 个答案: