Question

请参阅下面的HTML。我想让右上方的搜索栏更宽，一般只能控制其宽度。我已经尝试过搞乱网格系统了，因为这看起来像是要走的路，但是我尝试过没有尝试过改变搜索栏本身的宽度。

<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
        <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="//cdnjs.cloudflare.com/ajax/libs/less.js/2.7.2/less.min.js"></script>
        <script src="https://use.fontawesome.com/6e0448e881.js"></script>
        <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
    </head>
    <body>
        <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
            <a class="navbar-brand" href="#">Navbar</a>
            <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
            <span class="navbar-toggler-icon"></span>
            </button>
            <div class="collapse navbar-collapse">
                <ul class="navbar-nav mr-auto">
                    <li class="nav-item">
                        <a class="nav-link" href="#">Link</a>
                    </li>
                </ul>
                <ul class="navbar-nav ml-auto">
                            <li class="searchbar">
                                <form class="form-inline my-2 my-lg-0" method="get">
                                    <div class="dropdown">
                                        <input name="q" id="qbox" data-toggle="dropdown" type="search" class="form-control" placeholder="Search" autofocus="autofocus" autocomplete="off" aria-haspopup="true" aria-expanded="false"/>
                                        <div id="search_results" class="dropdown-menu" role="menu" aria-labelledby="qbox">
                                            <div>a</div>
                                            <div>b</div>
                                            <div>c</div>
                                        </div>
                                    </div>
                                </form>
                            </li>
                    <li class="usericon">
                        <button class="btn" id="login_dropdown" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                        Log in
                        </button>
                        <div class="dropdown-menu dropdown-menu-right" aria-labelledby="login_dropdown">
                            <a class="dropdown-item" href="#">Action</a>
                            <a class="dropdown-item" href="#">Another action</a>
                            <a class="dropdown-item" href="#">Something else here</a>
                        </div>
                    </li>
                </ul>
                <style>
                    .searchbar .dropdown-menu {
                    left: initial;
                    }
                    div#search_results {
                    width: 100%;
                    }
                </style>
            </div>
        </nav>
        <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>
    </body>
</html>

Answer 1

更改表单控件类的宽度

.form-inline .form-control{
   width:600px;
}

Bootstrap4控制内联形式的宽度

1 个答案: