更改Bootstrap 4 Carousel控件颜色(Change Bootstrap 4 Carousel Control Colors)

更改Bootstrap 4 Carousel控件颜色(Change Bootstrap 4 Carousel Control Colors)

我使用Bootstrap 4.0为传送带使用白色背景，并且想要更改控件的颜色。 看来引导程序现在使用SVG作为它们的传送带图标。 这意味着直接改变属性不起作用。

我现在对网站上的其他元素使用Font Awesome，所以如果有方法使用fa-v形图并对其进行格式化，并且它在调整大小和格式方面的表现仍然相同，那么这可能是一种有效的解决方案，因为好。

这是我当前的控制元素代码：

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

我在这里发现了一个类似的问题，但无法理解那里提供的答案。

我也在GitHub上找到了这个页面，但无法为我提供任何答案。

I am using a white background for a Carousel using Bootstrap 4.0 and would like to change the color of the controls. It seems that bootstrap now uses SVG for their carousel icons. This means altering the attributes directly does not work.

I am currently using Font Awesome for other elements on the site as well, so if there is a way to use fa-chevrons and format those instead, and it will still behave the same regarding resizing and formatting, that could be an effective solution as well.

Here is my current code for the control elements:

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

I found a similar question here but was not able to make sense of the answer provided there.

I also found this page on GitHub but was not able to make any of the answers there work for me either.

最满意答案

不需要任何不必要的CSS黑客。

如果你想修改任何引导程序的CSS（或特别是旋转木马控制颜色），你可以很容易地做到这一点。

以下是控制旋转木马控件颜色的规则：

.carousel-control-prev-icon { background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23fff' viewBox='0 0 8 8'%3E%3Cpath d='M5.25 0l-4 4 4 4 1.5-1.5-2.5-2.5 2.5-2.5-1.5-1.5z'/%3E%3C/svg%3E"); } .carousel-control-next-icon { background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23fff' viewBox='0 0 8 8'%3E%3Cpath d='M2.75 0l-1.5 1.5 2.5 2.5-2.5 2.5 1.5 1.5 4-4-4-4z'/%3E%3C/svg%3E"); }

将fill='%23fff'部分中的fff替换为所需颜色的十六进制代码。

下面是一个工作代码片段，其中fill='%23fff'已被fill='%23f00'替换为红色而不是白色：

<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>
    
<style>
.carousel-control-prev-icon {
    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23f00' viewBox='0 0 8 8'%3E%3Cpath d='M5.25 0l-4 4 4 4 1.5-1.5-2.5-2.5 2.5-2.5-1.5-1.5z'/%3E%3C/svg%3E");
}

.carousel-control-next-icon {
    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23f00' viewBox='0 0 8 8'%3E%3Cpath d='M2.75 0l-1.5 1.5 2.5 2.5-2.5 2.5 1.5 1.5 4-4-4-4z'/%3E%3C/svg%3E");
}
</style>

<div class="container">
    <div class="row">
        <div class="col">
            <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="https://placeimg.com/800/400/animals" alt="First slide">
                    </div>
                    <div class="carousel-item">
                        <img class="d-block w-100" src="https://placeimg.com/800/400/arch" alt="Second slide">
                    </div>
                    <div class="carousel-item">
                        <img class="d-block w-100" src="https://placeimg.com/800/400/nature" alt="Third slide">
                    </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>
    </div>
</div> 
  
 
There's no need for any unnecessary css hacks.
 
If you want to modify any Bootstrap css (or the carousel control colors in particular), you can easily do that.
 
Here are the rules that control the color of the carousel controls:
 
.carousel-control-prev-icon {
    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23fff' viewBox='0 0 8 8'%3E%3Cpath d='M5.25 0l-4 4 4 4 1.5-1.5-2.5-2.5 2.5-2.5-1.5-1.5z'/%3E%3C/svg%3E");
}

.carousel-control-next-icon {
    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23fff' viewBox='0 0 8 8'%3E%3Cpath d='M2.75 0l-1.5 1.5 2.5 2.5-2.5 2.5 1.5 1.5 4-4-4-4z'/%3E%3C/svg%3E");
}
 
Replace the fff in the fill='%23fff' parts with the hex code of the desired color.
 
Here's a working code snippet where fill='%23fff' has been replaced with fill='%23f00' for red instead of white:
 
 
 
  
  
<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>
    
<style>
.carousel-control-prev-icon {
    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23f00' viewBox='0 0 8 8'%3E%3Cpath d='M5.25 0l-4 4 4 4 1.5-1.5-2.5-2.5 2.5-2.5-1.5-1.5z'/%3E%3C/svg%3E");
}

.carousel-control-next-icon {
    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23f00' viewBox='0 0 8 8'%3E%3Cpath d='M2.75 0l-1.5 1.5 2.5 2.5-2.5 2.5 1.5 1.5 4-4-4-4z'/%3E%3C/svg%3E");
}
</style>

<div class="container">
    <div class="row">
        <div class="col">
            <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="https://placeimg.com/800/400/animals" alt="First slide">
                    </div>
                    <div class="carousel-item">
                        <img class="d-block w-100" src="https://placeimg.com/800/400/arch" alt="Second slide">
                    </div>
                    <div class="carousel-item">
                        <img class="d-block w-100" src="https://placeimg.com/800/400/nature" alt="Third slide">
                    </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>
    </div>
</div>