移动web——bootstrap如何修改原组件

基本介绍

1、bootstrap提供了丰富的组件，但是有时候我们不仅要删除不必要的标签，还需要修改里面的样式

2、我们建议若是修改样式那么最好将源样式从css中拷贝出来，名字换掉，然后修改具体样式，这样不会破坏原css中的样式，而且不怕繁杂的嵌套关系，万无一失

基本使用

1、将原css样式复制出来然后进行修改

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!-- 上述3个meta标签*必须*放在最前面，任何其他内容都*必须*跟随其后！ -->
    <title>Bootstrap 101 Template</title>

    <!-- Bootstrap -->
    <link href="css/bootstrap.min.css" rel="stylesheet">
    <style>
        .self-nav {
            background-color: #f8f8f8;
            border-color: #e7e7e7;
        }

        .self-nav .navbar-brand {
            color: #777;
            margin-top: 15px;
        }

        .self-nav .navbar-brand:hover,
        .self-nav .navbar-brand:focus {
            color: #5e5e5e;
            background-color: transparent;
        }

        .self-nav .navbar-text {
            color: #777;
        }

        .self-nav .navbar-nav > li > a {
            color: #777;
            height: 80px;
            line-height: 50px;
        }

        .self-nav .navbar-nav > li > a:hover,
        .self-nav .navbar-nav > li > a:focus {
            color: #333;
            background-color: transparent;
            border-bottom: 2px solid orange;
        }

        .self-nav .navbar-nav > .active > a,
        .self-nav .navbar-nav > .active > a:hover,
        .self-nav .navbar-nav > .active > a:focus {
            color: #555;
            /*background-color: #e7e7e7;*/
        }

        .self-nav .navbar-nav > .disabled > a,
        .self-nav .navbar-nav > .disabled > a:hover,
        .self-nav .navbar-nav > .disabled > a:focus {
            color: #ccc;
            background-color: transparent;
        }

        .self-nav .navbar-toggle {
            border-color: #ddd;
        }

        .self-nav .navbar-toggle:hover,
        .self-nav .navbar-toggle:focus {
            background-color: #ddd;
        }

        .self-nav .navbar-toggle .icon-bar {
            background-color: #888;
        }

        .self-nav .navbar-collapse,
        .self-nav .navbar-form {
            border-color: #e7e7e7;
        }

        .self-nav .navbar-nav > .open > a,
        .self-nav .navbar-nav > .open > a:hover,
        .self-nav .navbar-nav > .open > a:focus {
            color: #555;
            background-color: #e7e7e7;
        }

        @media (max-width: 767px) {
            .self-nav .navbar-nav .open .dropdown-menu > li > a {
                color: #777;
            }

            .self-nav .navbar-nav .open .dropdown-menu > li > a:hover,
            .self-nav .navbar-nav .open .dropdown-menu > li > a:focus {
                color: #333;
                background-color: transparent;
            }

            .self-nav .navbar-nav .open .dropdown-menu > .active > a,
            .self-nav .navbar-nav .open .dropdown-menu > .active > a:hover,
            .self-nav .navbar-nav .open .dropdown-menu > .active > a:focus {
                color: #555;
                background-color: #e7e7e7;
            }

            .self-nav .navbar-nav .open .dropdown-menu > .disabled > a,
            .self-nav .navbar-nav .open .dropdown-menu > .disabled > a:hover,
            .self-nav .navbar-nav .open .dropdown-menu > .disabled > a:focus {
                color: #ccc;
                background-color: transparent;
            }
        }

        .self-nav .navbar-link {
            color: #777;
        }

        .self-nav .navbar-link:hover {
            color: #333;
        }

        .self-nav .btn-link {
            color: #777;
        }

        .self-nav .btn-link:hover,
        .self-nav .btn-link:focus {
            color: #333;
        }

        .self-nav .btn-link[disabled]:hover,
        fieldset[disabled] .self-nav .btn-link:hover,
        .self-nav .btn-link[disabled]:focus,
        fieldset[disabled] .self-nav .btn-link:focus {
            color: #ccc;
        }
    </style>
    <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
    <script src="https://cdn.bootcss.com/html5shiv/3.7.3/html5shiv.min.js"></script>
    <script src="https://cdn.bootcss.com/respond.js/1.4.2/respond.min.js"></script>
    <![endif]-->
</head>
<body>
<nav class="navbar self-nav">
    <div class="container-fluid">
        <!-- Brand and toggle get grouped for better mobile display -->
        <div class="navbar-header">
            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse"
                    data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
                <span class="sr-only">Toggle navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
            </button>
            <a class="navbar-brand" href="#">Brand</a>
        </div>

        <!-- Collect the nav links, forms, and other content for toggling -->
        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
            <ul class="nav navbar-nav">
                <li class="active"><a href="#">Link <span class="sr-only">(current)</span></a></li>
                <li><a href="#">Link</a></li>
                <li><a href="#">Link</a></li>
                <li><a href="#">Link</a></li>
                <li><a href="#">Link</a></li>
            </ul>
            <ul class="nav navbar-nav navbar-right">
                <li><a href="#">Link</a></li>
            </ul>
        </div><!-- /.navbar-collapse -->
    </div><!-- /.container-fluid -->
</nav>

<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="js/jquery.min.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="js/bootstrap.min.js"></script>
</body>
</html>