Html 中心div内柱引导

我试图在bootstrap中将一个表单放在列的中心。可能是因为我搜索了一个多小时，还是什么也没找到。我是bootstrap的新手

我的代码：

<div class="container-fluid">

    <!--Row with two equal columns-->

    <div class="row">

        <div class="col-sm-8">

        <form class="form-inline row" role="form" action="index.php" method="post">

                <input class="form-control" type="text" name="kerkim" id="input_main" value="">

                <i id="slash">|</i>

                <div class="input-group">

                <input id="address" class="form-control" type="text" >
                <div class="input-group-btn">
                <button type="text" class="btn btn-warning"><i>Me gjej</i></button>
                </div>
                </div>
                    <button type="submit" class="btn btn-warning"><i class="glyphicon glyphicon-search"></i></button>

            </form>
        </div>

        <div class="col-sm-2"><h3>Second left</h3></div>
        <div class="col-sm-2"><h3>Second right</h3></div>

|
Me gjej
左二
右二

在表单“中心表单”中添加一个类

---

您可以在表格

col-md-offset-4

<form class="form-inline row col-md-offset-4" method="post" action="index.php" role="form">

---

有关更多详细信息，请参见

，您需要从表单元素中删除类行，因为它不包含任何列。接下来，您需要使用css将表单居中。 试试这个：

HTML

或者，您可以使用此html布局来完成居中表单：

<div class="container-fluid">

    <!--Row with two equal columns-->

    <div class="row">

        <div class="col-sm-8">
        <div class="row">
        <form class="form-inline centered col-sm-8 col-sm-offset-2" role="form" action="index.php" method="post">

                <input class="form-control" type="text" name="kerkim" id="input_main" value="">

                <i id="slash">|</i>

                <div class="input-group">

                <input id="address" class="form-control" type="text" >
                <div class="input-group-btn">
                <button type="text" class="btn btn-warning"><i>Me gjej</i></button>
                </div>
                </div>
                    <button type="submit" class="btn btn-warning"><i class="glyphicon glyphicon-search"></i></button>

            </form>
        </div>

        <div class="col-sm-2"><h3>Second left</h3></div>
        <div class="col-sm-2"><h3>Second right</h3></div>
        </div>
    </div>
</div>

|
Me gjej
左二
右二

<form class="form-inline row col-md-offset-4" method="post" action="index.php" role="form">

<div class="container-fluid">

    <!--Row with two equal columns-->

    <div class="row">

        <div class="col-sm-8">

        <form class="form-inline centered" role="form" action="index.php" method="post">

                <input class="form-control" type="text" name="kerkim" id="input_main" value="">

                <i id="slash">|</i>

                <div class="input-group">

                <input id="address" class="form-control" type="text" >
                <div class="input-group-btn">
                <button type="text" class="btn btn-warning"><i>Me gjej</i></button>
                </div>
                </div>
                    <button type="submit" class="btn btn-warning"><i class="glyphicon glyphicon-search"></i></button>

            </form>
        </div>

        <div class="col-sm-2"><h3>Second left</h3></div>
        <div class="col-sm-2"><h3>Second right</h3></div>
    </div>
</div>

.centered {
    margin: auto;
}

<div class="container-fluid">

    <!--Row with two equal columns-->

    <div class="row">

        <div class="col-sm-8">
        <div class="row">
        <form class="form-inline centered col-sm-8 col-sm-offset-2" role="form" action="index.php" method="post">

                <input class="form-control" type="text" name="kerkim" id="input_main" value="">

                <i id="slash">|</i>

                <div class="input-group">

                <input id="address" class="form-control" type="text" >
                <div class="input-group-btn">
                <button type="text" class="btn btn-warning"><i>Me gjej</i></button>
                </div>
                </div>
                    <button type="submit" class="btn btn-warning"><i class="glyphicon glyphicon-search"></i></button>

            </form>
        </div>

        <div class="col-sm-2"><h3>Second left</h3></div>
        <div class="col-sm-2"><h3>Second right</h3></div>
        </div>
    </div>
</div>