如何在 Bootstap4 基本滑块下方放置标题答案

【问题标题】：How to position a caption below a Bootstap4 basic slider如何在 Bootstap4 基本滑块下方放置标题
【发布时间】：2017-11-30 06:30:33
【问题描述】：

我需要在 Bootstap4 中的基本滑块下方放置一个标题。
这是我的 HTML 代码

<div class="col-xs-12 col-sm-6 col-md-5" style="float:right; padding:0;">
    <div id="carouselExampleControls" class="carousel slide" data-ride="carousel">
        <div class="carousel-inner">
            <div class="carousel-item active">
                <img class="d-block w-100" src="images/1.jpg" alt="First slide">
                <div class="newcaption">
                    <p>First caption</p>
                </div>
            </div>
            <div class="carousel-item">
                <img class="d-block w-100" src="images/2.jpg" alt="Second slide">
                <div class="newcaption">
                    <p>Second caption</p>
                </div>
            </div>
            <div class="carousel-item">
                <img class="d-block w-100" src="images/3.jpg" alt="Third slide">
                <div class="newcaption">
                    <p>Third caption</p>
                </div>
            </div>
        </div>


        <a class="carousel-control-prev" href="#carouselExampleControls" 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="#carouselExampleControls" role="button" data-slide="next">
            <span class="carousel-control-next-icon" aria-hidden="true"></span>
            <span class="sr-only">Next</span>
        </a>
    </div>  
</div>

首先，我的css是

.carousel-inner{position:relative; width:100%; overflow:hidden;}
.newcaption{position:absolute; bottom:-25px; top:auto; color:#000;}

然后变成这样

https://ibb.co/nG3rhw

（抱歉，我的声誉不足以发布图片。）

然后我在 .carousel-inner 中将溢出：“隐藏”更改为“可见”。现在它可以工作了，但它在像这样更改图像时显示 2 张图像

https://ibb.co/dd7v9b

那么如何在这个问题中放置标题？

【问题讨论】：

你能分享一个 jsfiddle 或 codepen 链接吗...这会很有帮助
如果你想定位在轮播图片的正上方，然后更改.newcaption{position:absolute; bottom:0; top:auto; color:#000;}，否则如果你不想在轮播上方显示它，但在它下方，你必须从轮播中管理它。根据当前幻灯片显示标题'
请添加带有完整脚本的jsfiddle。

标签： html css captions

【解决方案1】：

查看 css 使用以下代码，运行代码 sn-p 并检查结果。

.carousel-inner{position:relative; width:100%; overflow:hidden}
.newcaption{position:absolute; bottom:5px; top:auto; color:#000; left:5px}
.newcaption p{ margin:0px}

<!doctype html>
<html>
<head>
<meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.6/umd/popper.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js"></script>
</head>
<body>
<div class="col-xs-12 col-sm-6 col-md-5" style="float:right; padding:0;">
    <div id="carouselExampleControls" class="carousel slide" data-ride="carousel">
        <div class="carousel-inner">
            <div class="carousel-item active">
                <img class="d-block w-100" src="http://midtowncarpetcleaning.com/wp-content/themes/envision/lib/images/default-placeholder-1000x600.png" alt="First slide">
                <div class="newcaption">
                    <p>First caption</p>
                </div>
            </div>
            <div class="carousel-item">
                <img class="d-block w-100" src="http://midtowncarpetcleaning.com/wp-content/themes/envision/lib/images/default-placeholder-1000x600.png" alt="First slide">
                <div class="newcaption">
                    <p>Second caption</p>
                </div>
            </div>
            <div class="carousel-item">
                <img class="d-block w-100" src="http://midtowncarpetcleaning.com/wp-content/themes/envision/lib/images/default-placeholder-1000x600.png" alt="First slide">
                <div class="newcaption">
                    <p>Third caption</p>
                </div>
            </div>
        </div>


        <a class="carousel-control-prev" href="#carouselExampleControls" 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="#carouselExampleControls" role="button" data-slide="next">
            <span class="carousel-control-next-icon" aria-hidden="true"></span>
            <span class="sr-only">Next</span>
        </a>
    </div>  
</div>

</body>
</html>

【讨论】：

它仍然无法显示超出图像边界的标题。

【解决方案2】：

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Untitled Document</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" 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/1.12.3/umd/popper.min.js" integrity="sha384-vFJXuSJphROIrBnz7yo7oB41mKfc8JzQZiCq4NCceLEaO4IHwicKwpJf9c9IpFgh" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js" integrity="sha384-alpBpkh1PFOepccYVYDB4do5UnbKysX5WZXm3XxPqe5iKTfUKjNkCk9SaVuEZflJ" crossorigin="anonymous"></script>
</head>
<body>
<div class="col-xs-12 col-sm-6 col-md-5" style="float:right; padding:0;">
    <div id="carouselExampleControls" class="carousel slide" data-ride="carousel">
        <div class="carousel-inner">
            <div class="carousel-item active">
                <img class="d-block w-100" src="http://midtowncarpetcleaning.com/wp-content/themes/envision/lib/images/default-placeholder-1000x600.png" alt="First slide">
                <div class="newcaption">
                    <p>First caption</p>
                </div>
            </div>
            <div class="carousel-item">
                <img class="d-block w-100" src="http://midtowncarpetcleaning.com/wp-content/themes/envision/lib/images/default-placeholder-1000x600.png" alt="Second slide">
                <div class="newcaption">
                    <p>Second caption</p>
                </div>
            </div>
            <div class="carousel-item">
                <img class="d-block w-100" src="http://midtowncarpetcleaning.com/wp-content/themes/envision/lib/images/default-placeholder-1000x600.png" alt="Third slide">
                <div class="newcaption">
                    <p>Third caption</p>
                </div>
            </div>
        </div>


        <a class="carousel-control-prev" href="#carouselExampleControls" 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="#carouselExampleControls" role="button" data-slide="next">
            <span class="carousel-control-next-icon" aria-hidden="true"></span>
            <span class="sr-only">Next</span>
        </a>
    </div>  
</div>
<style>
.carousel-inner{position:relative; width:100%; overflow:hidden;}
.newcaption{position:absolute; bottom:2px; top:auto; color:#000; left:5px;}
.newcaption p{ margin:0px; }
</style>
</body>
</html>

【讨论】：