根据身体类别覆盖Bootstrap 4中的主要颜色?

时间:2017-09-24 01:37:42

标签: css twitter-bootstrap sass bootstrap-4

我有一个网站,每个部分都有自己的原色。

我想在Bootstrap 4的Sass代码中添加一些内容,根据我设置的正文类重写主要颜色。

我有这个,但到目前为止还没有工作:

$theme-colors: () !default;
$theme-colors: map-merge((
    // primary: $blue,
    // secondary: $gray-600,
    success: $green,
    info: $cyan,
    warning: $yellow,
    danger: $red,
    light: $gray-100,
    dark: $gray-800
), $theme-colors) !default;

// override according to portal
html {
    &.portal-1 {
        $theme-colors: map-merge((
            primary: #f1b36d
        ), $theme-colors);
    }

如何在Bootstrap 4的Sass文件中实现?

2 个答案:

答案 0 :(得分:1)

您无法在客户端动态更改已转换为静态CSS的sass变量。 但是,要构建主题系统,您可以应用以下选项之一:

<强> 1。生成独立主题

在构建系统中放置一个主题参数,它将生成不同的主题CSS Ex:grunt build-sass --theme=brown

var themes = {
    "default": "https://bootswatch.com/flatly/bootstrap.min.css",
    "cerulean" : "https://bootswatch.com/cerulean/bootstrap.min.css"
}

// Use something like this to add theme: (You can also append instead of overriding whole head html)
var headHTML = document.getElementsByTagName('head')[0].innerHTML;
headHTML    += '<link type="text/css" rel="stylesheet" href="' + themes.cerulean +'">';
document.getElementsByTagName('head')[0].innerHTML = headHTML;

<强> 2。根据父类更改属性

您可以拥有一个定义通用CSS的基本CSS。然后你可以根据父

获得单独的CSS属性

在以下示例中,将green-theme类更新为blue-theme,反之亦然

&#13;
&#13;
div[class^=component] {
  display: inline-block;
  width:150px;
  height: 150px;
  margin: 1em;
  border: 1px solid black;
  box-shadow: 1px 1px 5px gray;
  border-radius:1em;
}

/* Colors*/
$blue1: #3066BE; 
$blue2: #090C9B;
$green1: #5C946E; 
$green2: #80C2AF;

/* Blue Theme */
.blue-theme {
  .component1 {
    background-color: $blue1;
  }
  
  .component2 {
    background-color: $blue2;
   }
}
/* Green Theme */
.green-theme {
  .component1 {
    background-color: $green1;
  }
  
  .component2 {
    background-color: $green2;
   }
}
&#13;
<div class="green-theme" id="mainBody">
    <div class="component1">
    </div>
    
     <div class="component2">
    </div>
</div>
&#13;
&#13;
&#13;

* Run Snippet因使用SCSS *而无法正常工作

答案 1 :(得分:1)

制作这样的scss文件结构,

- vendors
  - bootstrap
    - stylesheets /*[Bootstrap 4 official sass files]*/
      - _bootstrap.scss
- scss
  - themes
    - _theme-1.scss
    - _theme-2.scss
  - _variables.scss
  - styles.scss
  - portal-1.scss
  - portal-2.scss

_variables.scss

@import "../vendors/bootstrap/stylesheets/bootstrap/variables";
@import "../vendors/bootstrap/stylesheets/bootstrap/mixins";
/* override bootstrap default variables ... */
/* custom variables with !default ... */

styles.scss

@import "variables";
@import "../vendors/bootstrap/stylesheets/bootstrap";
/* custom styles ... */

主题/ _theme-1.scss

@import "../variables";
/* change value bootstrap and custom default variables ... */
$brand-primary:         #428bca
$brand-success:         #5cb85c;
$brand-info:            #5bc0de;
$brand-warning:         #f0ad4e;
$brand-danger:          #d9534f;
$body-bg:               #eff;

主题/ _theme-2.scss

@import "../variables";
/* change value bootstrap and custom default variables ... */
$brand-primary:         #C04848;

门户1.scss

@import "themes/_theme-1";
/* change style with new variable bootstrap default components ... */
.portal-1 {
    @import "../vendors/bootstrap/stylesheets/bootstrap/buttons";
    @import "../vendors/bootstrap/stylesheets/bootstrap/alerts";
   /* custom style overrides ... */
}

门户2.scss

@import "themes/_theme-2";
/* change style with new variable bootstrap default components ... */
.portal-2 {
    @import "../vendors/bootstrap/stylesheets/bootstrap/buttons";
    @import "../vendors/bootstrap/stylesheets/bootstrap/alerts";
   /* custom styles from style.scss overrides ... */
}

在sass编译之后,我们将得到3个文件styles.css,portal-1.css和portal-2.css。 默认情况下使用style.css,其他包括head标签用于主题。

<html>
    <head>
         <link href="styles.css" rel="stylesheet" />
         <link href="portal-1.css" rel="stylesheet" />
    </head>
    <body>
        <button class="btn btn-primary">BUTTON</button>
        <div class="portal-1">
            <button class="btn btn-primary">BUTTON</button>
        </div>
    </body>
</html>