我正在为我的作业建立网页。我想要模式注册表单，但是当我单击“ SIGNUP”将其弹出时，它立即关闭。为什么会这样呢？如何解决？我不想在我的模态上自动关闭。当我单击另一个区域或单击“ x”以关闭时，我想关闭它。
我是Web开发的初学者。我不将Bootstrap用于模态。
的HTML
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<link rel="stylesheet" type="text/css" href="home.css">
<title>Online Stock Trading</title>
</head>
<body>
<!-- navbar -->
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<a class="navbar-brand" href="#">STOCK</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNavAltMarkup">
<div class="navbar-nav">
<a class="nav-item nav-link active" href="#">Home <span class="sr-only">(current)</span></a>
<a class="nav-item nav-link" href="#">Market Data</a>
<a class="nav-item nav-link" href="#">Trade</a>
</div>
</div>
<form class="form-inline">
<input class="form-control mr-sm-2" type="search" placeholder="Username">
<input class="form-control mr-sm-2" type="search" placeholder="Password">
<button class="btn btn-success my-2 mr-sm-2" id="login">LOGIN</button>
<button class="btn btn-primary my-2 mr-sm-2" id="sign_up">SIGN UP</button>
</form>
</nav>
CSS
#modal_content{
width: 40%;
height: auto;
margin-top: 3%;
display: none;
z-index: 1;
overflow: auto;
}
我希望模式寄存器窗体不会自动关闭。
POPMUISE
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