我正在做一个网站项目，正在使用Materialize框架。
问题：
我必须制作一个导航栏，它应该能够显示下拉菜单/子菜单。我认为主要问题可能是在overflow：或z-index上。因此，我试图测试auto，visible等之间的溢出。在测试过程中，我得到了两个观察结果：
谁能指出我想念的东西吗？或我的代码有什么问题，我们将不胜感激，谢谢。
这是我的HTML：
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" charset="utf-8" />
<meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no" />
<meta name="HandheldFriendly" content="true">
<title></title>
<!--CSS-->
<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
<link type="text/css" rel="stylesheet" href="css/materialize.min.css" media="screen,projection" />
<link href="css/style.css" type="text/css" rel="stylesheet" media="screen,projection" />
</head>
<body>
<!-- Header -->
<nav id="navbar" class="white" role="navigation">
<div class="nav-wrapper container">
<a id="logo-container" href="index.html" class="brand-logo">
<img src="images/logo_new.png" class="logosize" alt="logo">
</a>
<ul class="right hide-on-med-and-down">
<li>
<a class='dropdown-button' href='#' data-activates='architect'>Architect</a>
</li>
<li>
<a class='dropdown-button' href='#' data-activates='interior'>Interior</a>
</li>
<li>
<a class='dropdown-button' href='#' data-activates='commercial'>Commercial</a>
</li>
<li>
<a class='dropdown-button' href='#' data-activates='test'>Office</a>
</li>
<li>
<a href="about.php">About Us</a>
</li>
<li>
<a href="contact.php">Contact Us</a>
</li>
</ul>
<ul id="nav-mobile" class="side-nav">
<li>
<a class="dropdown-button" href="#" data-activates="architect-mobile">Architect</a>
</li>
<li>
<a class="dropdown-button" href="#" data-activates="interior-mobile">Interior</a>
</li>
<li>
<a class="dropdown-button" href="#" data-activates="commercial-mobile">Commercial</a>
</li>
<li>
<a class="dropdown-button" href="#" data-activates="test-mobile">Office</a>
</li>
<li>
<a href="about.php">About Us</a>
</li>
<li>
<a href="contact.php">Contact Us</a>
</li>
</ul>
<a href="#" data-activates="nav-mobile" class="button-collapse">
<i class="material-icons">menu</i>
</a>
</div>
</nav>
<!-- Info Page -->
<div class="container">
<div class="row">
<div class="col s12">
<!-- note: there is center before -->
<!-- <h3><i class="mdi-content-send brown-text"></i></h3> -->
<!-- Menu 1 -->
<div class="col s12 m5">
<p align="left">
<h3>
<b>Intimate House</b>
</h3>
<br> Project : Intimate House
<br>
<br> Location : Pulau Putri, Puri - West Jakarta - Indonesia
<br>
<br> Site Area : 160 sqm
<br>
<br> Building Area : 210 sqm
<br>
<br> Design Phase : 2016
<br>
<br> Construction Period : April 2016 - July 2017
<br>
<br>
</p>
<div class="textbox">
<p align="left">
<i>
Intimate House was built on a 8m x 20m land in West Jakarta. At first, it was a one story house with 2 bedrooms and 2 bathrooms.
It had a high ceiling, but lack of open space inside the house which make this house look
extremely dark, moist, and stuffy.</i>
<br>
<br>
</p>
<p align="right">
<i>
We transformed this house program by separating service area and private area. Furthermore private area is connected by a
connecting chamber in order to transform service area into private area which can be used
as a gathering room which is the main area in this Intimate House.</i>
<br>
<br>
</p>
<p align="left">
<i>
Living Room was designed to have natural air circulation and natural lighting. Both these natural element is obtained from
an open space next to Living Room, High Ceiling, and Skylight.</i>
<br>
<br>
</p>
</div>
</div>
<!-- Menu 2 -->
<div class="col s12 m7">
<div class="slider">
<ul class="slides">
<li>
<img src="images/architecture/intimate_house/1.jpg">
<!-- random image -->
</li>
<li>
<img src="images/architecture/intimate_house/3.jpg">
<!-- random image -->
</li>
<li>
<img src="images/architecture/intimate_house/4.jpg">
<!-- random image -->
</li>
<li>
<img src="images/architecture/intimate_house/5.jpg">
<!-- random image -->
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
<br>
<br>
<!-- Dropdown Menu -->
<div class="container_sub">
<div class="section">
<div class="row">
<!-- Architect -->
<ul id='architect' class='dropdown-content'>
<li>
<a href="project.html">Project one</a>
</li>
<li>
<a href="#!">two</a>
</li>
<li>
<a href="#!">three</a>
</li>
</ul>
<ul id='architect-mobile' class='dropdown-content'>
<li>
<a href="project.html">Project one</a>
</li>
<li>
<a href="#!">two</a>
</li>
<li>
<a href="#!">three</a>
</li>
</ul>
<!-- Interior -->
<ul id='interior' class='dropdown-content'>
<li>
<a href="#!">one</a>
</li>
<li>
<a href="#!">two</a>
</li>
<li>
<a href="#!">three</a>
</li>
</ul>
<ul id='interior-mobile' class='dropdown-content'>
<li>
<a href="#!">one</a>
</li>
<li>
<a href="#!">two</a>
</li>
<li>
<a href="#!">three</a>
</li>
</ul>
<!-- Commercial -->
<ul id='commercial' class='dropdown-content'>
<li>
<a href="#!">one</a>
</li>
<li>
<a href="#!">two</a>
</li>
<li>
<a href="#!">three</a>
</li>
</ul>
<ul id='commercial-mobile' class='dropdown-content'>
<li>
<a href="#!">one</a>
</li>
<li>
<a href="#!">two</a>
</li>
<li>
<a href="#!">three</a>
</li>
</ul>
<!-- Office -->
<ul id='test' class='dropdown-content'>
<li>
<a href="#!">one</a>
</li>
<li>
<a href="#!">two</a>
</li>
<li>
<a href="#!">three</a>
</li>
</ul>
<ul id='test-mobile' class='dropdown-content'>
<li>
<a href="#!">one</a>
</li>
<li>
<a href="#!">two</a>
</li>
<li>
<a href="#!">three</a>
</li>
</ul>
</div>
</div>
</div>
<footer class="page-footer teal">
<div class="footer-copyright">
<div class="container">
Copyright @
<a class="white-text" href="#">2018</a>
</div>
</div>
</footer>
<!--Import jQuery before materialize.js-->
<script type="text/javascript" src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<script type="text/javascript" src="js/materialize.min.js"></script>
<script src="js/init.js"></script>
<script type="text/javascript">
$(document).ready(function () {
$('.carousel.carousel-slider').carousel({
fullWidth: true
});
$('.slider').slider();
$(".dropdown-button").dropdown({
hover: true
});
});
</script>
这是我的完整代码：https://codepen.io/bukuchaga/pen/Zjqvxe
再次感谢。
答案 0 :(得分：0)
当我从样式类position: relative中删除nav .nav-wrapper属性时，这种工作有效。您可以删除它，也可以用position: inherit覆盖它。
答案 1 :(得分：0)
您做错了，您应该知道位置属性的工作方式。您正在使用相对位置。因此，当您使用position relative时，意味着relative to itself并非来自something else。下次请记住这些棘手的事情是如何工作的，这样就不会浪费您的时间来解决由它们引起的错误。
我看过您的代码，css包装器类nav .nav-wrapper的相对位置错误。
这里不需要使用relative position，因为它是unnecessary。因此，remove它和您的代码将像灵符一样工作。
如果您在设计上还有其他错误，请发布另一个问题，如果我或其他人已回答您的问题，则将我或某人的回答标记为已接受，以便可以关闭此线程。谢谢。