你好我试图让默认的自举轮播指示器在底部粘在非常薄的黄色线上，如下图所示。
https://gyazo.com/43b9bdbcb63dde3f5fe9b982d4b96b37
我让它们位于页面底部，但我似乎无法将它们更改为矩形或更改颜色。
HTML
<ol class="carousel-indicators">
<li data-target="#myCarousel" data-slide-to="0" class="active"></li>
<li data-target="#myCarousel" data-slide-to="1"></li>
<li data-target="#myCarousel" data-slide-to="2"></li>
<li data-target="#myCarousel" data-slide-to="3"></li>
</ol>
CSS
.carousel-indicators {
margin: 0px;
height: 0px;
}
.carousel-indicators ol {
width: 100%;
}
.carousel-indicators li{
height: 3px !important;
border-radius: 0px !important;
width: 25%;
}
答案 0 :(得分：8)
这样的东西？请注意，宽度并不完全准确，因为我只做了33％。
.item img {
width: 100%;
height: auto
}
.carousel {
position: relative;
width: 200px;
height: 100px;
}
ol.carousel-indicators {
position: absolute;
bottom: 0;
margin: 0;
left: 0;
right: 0;
width: auto;
}
ol.carousel-indicators li,
ol.carousel-indicators li.active {
float: left;
width: 33%;
height: 10px;
margin: 0;
border-radius: 0;
border: 0;
background: transparent;
}
ol.carousel-indicators li.active {
background: yellow;
}<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
<div id="carousel" class="carousel slide" data-ride="carousel">
<ol class="carousel-indicators">
<li data-target="#carousel" data-slide-to="0" class="active"></li>
<li data-target="#carousel" data-slide-to="1"></li>
<li data-target="#carousel" data-slide-to="2"></li>
</ol>
<div class="carousel-inner" role="listbox">
<div class="item active">
<img src="http://placehold.it/200x100" alt="Slide 1">
<div class="carousel-caption">
Slide 1
</div>
</div>
<div class="item">
<img src="http://placehold.it/200x100" alt="Slide 2">
<div class="carousel-caption">
Slide 2
</div>
</div>
<div class="item">
<img src="http://placehold.it/200x100" alt="Slide 3">
<div class="carousel-caption">
Slide 3
</div>
</div>
</div>
<a class="left carousel-control" href="#carousel" role="button" data-slide="prev">
<span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
<span class="sr-only">Previous</span>
</a>
<a class="right carousel-control" href="#carousel" role="button" data-slide="next">
<span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
<span class="sr-only">Next</span>
</a>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
答案 1 :(得分：1)
很棒的CSS！我用它来开发出半白色的球形指示器和黄色的活动指示器。
ol.carousel-indicators {
position: absolute;
bottom: 5px;
margin: 0;
left: 0;
right: 0;
width: auto;
}
ol.carousel-indicators li,
ol.carousel-indicators li.active {
width: 1rem;
height: 1rem;
margin: 0;
border-radius: 50%;
border: 0;
background: transparent;
}
ol.carousel-indicators li {
background: rgba(255,255,255,0.39);
margin-left: .5rem;
margin-right: .5rem;
}
ol.carousel-indicators li.active {
background: yellow;
}
答案 2 :(得分：0)
我刚刚为自己编写了类似的代码， 我认为这会帮助您更多。 通过使用Flex布局，您可以类似地拉伸指标 不用担心宽度 flex-grow：1;做这份工作
https://codepen.io/ophiuch/pen/Jzowbo
.carousel /*slider */
{
position: relative;
}
.carousel .carousel-indicators /* indicator wrapper*/
{
position: absolute;
bottom: 0;
left:0px;
width: 100%;
margin: 0;
left: 0;
right: 0;
width: 100%;
display: flex; /* this is for indicators */
}
#headcarousel_container .carousel-indicators li /* indicators*/
{
flex-grow: 1; /* make all indicator li similarly stretched */
height: 40px;
border-radius: 2px;
}
#headcarousel_container .carousel-indicators li.active
{
background-color:rgba(251,222,87,0.5) ;/* changes indicators color when it is active*/
}
.carousel .carousel-inner .item img
{
width: 100%;
height: 100vh;
object-fit: cover;
}<!DOCTYPE html>
<html lang="en">
<head>
<title>Carousel</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/js/bootstrap.min.js"></script>
</head>
<body>
<!--slider -->
<div class="container-fluid" id="headcarousel_container" style="padding: 0;">
<div id="headcarouselid" class="carousel slide" data-ride="carousel">
<!-- indicators -->
<ul class="carousel-indicators">
<li class="active" data-target="#headcarouselid" data-slide-to="0"></li>
<li class="" data-target="#headcarouselid" data-slide-to="1"></li>
<li class="" data-target="#headcarouselid" data-slide-to="2"></li>
<li class="" data-target="#headcarouselid" data-slide-to="3"></li>
<li class="" data-target="#headcarouselid" data-slide-to="4"></li>
</ul>
<!-- Wrapper for slides -->
<div class="carousel-inner">
<div class="item active">
<img src="https://cdn.pixabay.com/photo/2017/08/30/01/05/milky-way-2695569_960_720.jpg" title="slidepicture" alt="slidepicture">
</div>
<div class="item">
<img src="https://cdn.pixabay.com/photo/2014/07/28/20/39/landscape-404072_960_720.jpg" title="slidepicture" alt="slidepicture">
</div>
<div class="item">
<img src="https://cdn.pixabay.com/photo/2018/08/23/07/35/thunderstorm-3625405_960_720.jpg" title="slidepicture" alt="slidepicture">
</div>
<div class="item">
<img src="https://cdn.pixabay.com/photo/2017/09/08/20/29/chess-2730034_960_720.jpg" title="slidepicture" alt="slidepicture">
</div>
<div class="item">
<img src="https://cdn.pixabay.com/photo/2018/05/30/15/31/rustic-3441673_960_720.jpg" title="slidepicture" alt="slidepicture">
</div>
</div>
<!-- Left and right controls -->
<a class="carousel-control left" href="#headcarouselid" data-slide="prev">
<span class="glyphicon glyphicon-chevron-left"></span>
</a>
<a class="carousel-control right" href="#headcarouselid" data-slide="next">
<span class="glyphicon glyphicon-chevron-right"></span>
</a>
</div>
</div>
</body>
</html>