<div class="container">
        <form class="form-horizontal">
            <div class="form-group">
                <label for="inputEmail3" class="col-sm-2 control-label">Email</label>
                <div class="col-sm-10">
                    <input type="email" class="form-control" id="inputEmail3" placeholder="Email">
                </div>
            </div>
            <div class="form-group">
                <label for="inputPassword3" class="col-sm-2 control-label">Password</label>
                <div class="col-sm-10">
                    <input type="password" class="form-control" id="inputPassword3" placeholder="Password">
                </div>
            </div>
            <div class="form-group">
                <div class="col-sm-offset-2 col-sm-10">
                    <div class="checkbox">
                        <label>
                            <input type="checkbox"> Remember me
                        </label>
                    </div>
                </div>
            </div>
            <div class="form-group">
                <div class="col-sm-offset-2 col-sm-10">
                    <button type="submit" class="btn btn-default">Sign in</button>
                </div>
            </div>
        </form>
    </div>
</body>

</html>

<!--
    .control-label：让文本内容在lable容器的右侧显示
    .form-horizontal：给form添加的类，添加后，该form中的表单元素具有相应的样式
 -->