【发布时间】：2018-06-06 02:53:50
【问题描述】：
我已经在互联网上甚至在这个网站上搜索过答案，但没有运气。我遇到的问题是两个下拉按钮登录和注册在单击时显示两个下拉菜单我使用 btn-group 类来解决此问题，但随后出现问题，它无法在较小的移动屏幕上正确显示更改它对 btn 类进行了一点修复，然后问题是选项水平显示而不是堆叠，这看起来很糟糕。我也尝试了 data-target ，但这不起作用，任何帮助都将不胜感激。这是我的 html 和 css 代码示例。
代码
.navbar {
background-color: #00CED1;
border: none;
}
.navbar-default .navbar-brand {
color: white;
font-family: Tahoma;
font-size: 20px;
font-style: italic;
}
.navbar-left {
width: 70%;
margin-left: -15px;
}
#navForm {
border: none;
}
#loginbtn {
margin-right: 16px;
background: none;
color: white;
border: 2px solid white;
}
#searchbtn {
margin-left: -13px;
background-color: #00b3b3;
color: white;
border-color: #00b3b3;
}
#submitbtn {
width: 100%;
}
#burgerbtn:hover {
background-color: #1673b1;
}
#searchbtn:hover {
background-color: #1673b1;
border-color: #1673b1;
}
#search {
width: 100%;
background-color: #00b3b3;
border: none;
color: white;
}
#password,
#username {
margin-top: 15px;
}
b,
strong {
color: #1673b1;
}
#form {
border: none;
}
#navdiv {
border: none;
}
#form2 input::placeholder {
color: white;
}
#form input::placeholder {
color: white;
}
.navbar-default .navbar-toggle .icon-bar {
background-color: white;
}
.dropdown-menu {
padding-left: 15px;
padding-right: 15px;
}
@media screen and (max-width: 720px) {
b,
strong {
position: absolute;
top: 0.5%;
left: 35%;
}
#navdiv {
width: 80%;
}
.navbar-toggle {
border: none;
}
#navdiv {
width: 165%;
}
.navbar-left {
width: 100%;
}
#loginbtn {
margin-left: 5%;
}
}
#navdiv1 {
border: 1px solid black;
}<!DOCTYPE html>
<html lang="en">
<head>
<title>LearnLyte Connect Share Learn</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<link rel="stylesheet" type="text/css" href="css/bootstrap.css">
<link rel="stylesheet" type="text/css" href="css/app-bootstrap.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
</head>
<body>
<nav class="navbar navbar-default navbar-fixed-top">
<div class="container-fluid">
<div class="navbar-header">
<a class="navbar-brand" href="#"><strong><font color="white">LearnLyte</font></strong></a>
<button id="burgerbtn" type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navForm">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
</div>
<div id="navdiv" class="navbar-left navbar-form">
<form id="form">
<div class="form-group col-xs-6">
<input id="search" type="text" class="form-control" placeholder="Search Here...">
</div>
<button type="submit" id="searchbtn" class="btn btn-default">Search</button>
</form>
</div>
<div class="navbar-right form-inline">
<div class=" collapse navbar-collapse navbar-form" id="navForm">
<!--<div>-->
<button id="signupbtn" type="button" class="btn dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Sign Up</button>
<div class="dropdown-menu">
<div class="text-center">
<h4><b> Sign Up</b></h4>
</div><br>
<form autocomplete="off">
<div class="form-group">
<label for="firstname">Firstname</label>
<input type="text" id="firstname" tabindex="1" class="form-control" placeholder="Firstname">
</div>
<div class="form-group">
<label for="lastname">Lastname</label>
<input type="text" id="lastname" tabindex="2" class="form-control" placeholder="Lastname">
</div>
<div class="form-group">
<label for="username">Username</label>
<input type="text" tabindex="3" class="form-control" placeholder="Username">
</div>
<div class="form-group">
<label for="email">Email</label>
<input type="email" tabindex="4" class="form-control" placeholder="Email">
</div>
</form>
</div>
<!--</div>-->
<!--<div>-->
<button id="loginbtn" type="button" class="btn dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"> Sign In</button>
<div class="dropdown-menu">
<div class="text-center">
<h4><b> Sign In</b></h4>
</div><br>
<form autocomplete="off">
<div class="form group">
<label for="username">Username</label>
<input type="text" id="username" tabindex="1" class="form-control" placeholder="Username" autocomplete="off">
</div>
<div class="form-group">
<label for="password">Password</label>
<input type="password" id="password" tabindex="2" class="form-control" placeholder="Password" autocomplete="off">
</div>
<br>
<div class="form-group">
<div class="text-center">
<a href="#" class="forgot-password">Forgot password?</a>
</div>
</div>
<br><br>
<div>
<button id="submitbtn" type="submit" class="btn btn-primary btn-block">Sign In</button>
</div>
</form>
</div>
<!--</div>-->
</div>
</div>
</div>
</nav>
<script type="text/javascript" src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script type="text/javascript" src="js/bootstrap.min.js"></script>
<script type="text/javascript" src="js/bootstrap.js"></script>
</body>
</html>【问题讨论】：
标签： html css twitter-bootstrap