I have written code blow for my page navigation's part:
<nav class="navbar navbar-inverse noPadding">
        <div class="container-fluid">
            <div class="navbar-header">
                <a href="#" class="navbar-brand">A</a>
            </div>
            <ul class="nav navbar-left navbar-nav">
                <li><a href="#"><button class="btn btn-danger btn_no_border">هشدارها</button></a></li>
                <li><a href="#"><button class="btn btn-success btn_no_border">اقلام جدید</button></a></li>
                <li><a href="#"><button class="btn btn-primary btn_no_border">ناموجود</button></a></li>
                <li><a href="#"><button class="btn btn-info btn_no_border">مشتریان جدید</button></a></li>
                <li><a href="#"><button class="btn btn-warning btn_no_border">همکاران جدید</button></a></li>
                <li class="dropdown"><a class="dropdown-toggle" data-toggle="dropdown" href="#"><button class="btn-default btn_no_border navbar-btn">B<sapn class="caret"></sapn></button></a>
                    <ul class="dropdown-menu">
                        <li><a href="#">نمایه</a></li>
                        <li><a href="#">خروج</a></li>
                    </ul>
                </li>
            </ul>
        </div>
    </nav>
My problem is in section blow:
<ul class="nav navbar-left navbar-nav">
            <li><a href="#"><button class="btn btn-danger btn_no_border">هشدارها</button></a></li>
            <li><a href="#"><button class="btn btn-success btn_no_border">اقلام جدید</button></a></li>
            <li><a href="#"><button class="btn btn-primary btn_no_border">ناموجود</button></a></li>
            <li><a href="#"><button class="btn btn-info btn_no_border">مشتریان جدید</button></a></li>
            <li><a href="#"><button class="btn btn-warning btn_no_border">همکاران جدید</button></a></li>
            <li class="dropdown"><a class="dropdown-toggle" data-toggle="dropdown" href="#"><button class="btn-default btn_no_border navbar-btn">B<sapn class="caret"></sapn></button></a>
                <ul class="dropdown-menu">
                    <li><a href="#">نمایه</a></li>
                    <li><a href="#">خروج</a></li>
                </ul>
            </li>
        </ul>
I created some link button, but clickable area expand out of button! I tried to solve it using giving tag padding and margin zero but it disorder buttons position. How can I limit clickable area just to button?
 
    