说明：这是网站的静态首页：
问题：我编写了以下代码，除了子菜单不能很好地突出显示（不是全角）之外，其他所有功能都正常
任何帮助表示赞赏，谢谢。
$('.nav li > .sub-menu').parent().hover(function() {
var submenu = $(this).children('.sub-menu');
if ($(submenu).is(':hidden')) {
$(submenu).slideDown('slow');
} else {
$(submenu).slideUp('slow');
}
});body {
font-family: 'Roboto', sans-serif;
font-weight: 300;
}
header {
padding: 20px 0;
}
header .row,
footer .row {
display: flex;
align-items: center;
}
.nav li {
text-decoration: none;
list-style: none;
padding: 5px 10px;
color: black;
width: auto;
}
.nav>li {
float: left;
}
.nav .sub-menu {
position: absolute;
display: none;
background-color: rgb(100, 100, 100);
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
padding: 0.5em 2em 0.5em 0.75em;
}
.sub-menu>li {
display: block;
float: none;
padding: 10px 0;
width: auto;
white-space: nowrap;
z-index: 9999;
}
.sub-menu li a {
text-decoration: none;
cursor: pointer;
color: white;
width: auto;
text-align: left;
white-space: nowrap;
padding: 10px 0;
}
.sub-menu li a:hover {
background: #e3e3e3;
}
header h1 {
font-weight: 900;
margin: 0;
}
header nav {
position: relative;
display: flex;
justify-content: flex-end;
z-index: 9999;
overflow: visible;
}
header p {
padding: 0 20px;
margin: 0;
}
.jumbotron {
position: relative;
display: flex;
align-items: center;
background-image: url('https://s3.amazonaws.com/codecademy-content/projects/make-a-website/lesson-4/jumbotron.jpg');
background-size: cover;
color: #ffffff;
height: 500px;
text-shadow: 0.25px 0.25px 0.25px #000000;
z-index: -9999;
}
.jumbotron h2 {
font-size: 60px;
font-weight: 900;
margin: 0;
color: #fff;
}
.jumbotron h3 {
margin: 0 0 20px;
color: #fff;
}
section .row img {
margin: 0 0 30px;
width: 100%;
}
.col-md-6 {
margin: 0 0 30px;
}
.btn.btn-primary {
border-radius: 2px;
border: 0px;
color: #fbd1d5;
text-shadow: none;
background-color: #ffffff;
-webkit-transition: width 2s, height 2s;
-webkit-transition-duration: 5s;
}
.btn.btn-primary:hover {
width: 70px;
height: 35px;
text-align: center;
line-height: 22.5px;
color: #ffffff;
background-color: #fbd1d5;
}
.btn-secondary {
background-color: #E8DFE0;
color: #ffffff;
margin: 0 0 30px;
}
section .col-sm-6 img {
border-radius: 6px;
}
section .col-sm-6 img:hover {
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
}
footer {
font-size: 12px;
padding: 20px 0;
}
footer .col-sm-8 {
display: flex;
justify-content: flex-end;
}
footer ul {
list-style: none;
}
footer li img {
width: 32px;
height: 32px;
}<!DOCTYPE html>
<html>
<head>
<title>Skillfair</title>
<meta charset="utf-8" />
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
<link href='https://fonts.googleapis.com/css?family=Roboto:300,400,700' rel='stylesheet' type='text/css'>
<link rel="stylesheet" type="text/css" href="main.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.0/jquery.min.js"></script>
</head>
<body>
<header class="container">
<div class="row">
<h1 class="col-sm-4">Skillfair</h1>
<nav class="col-sm-8 text-right">
<ul class="nav">
<li>
<a href="#offers">OFFERS</a>
<ul class="sub-menu">
<li><a>buy 1 get 1</a></li>
<li><a>buy 2 get 2</a></li>
<li><a>buy 3 get 3</a></li>
</ul>
</li>
<li><a href="#catalogue">CATALOGUE</a></li>
<li><a href="#contact">CONTACT</a></li>
</ul>
</nav>
</div>
</header>
<section class="jumbotron">
<div class="container">
<div class="row text-center">
<h2>Homemade Goods</h2>
<h3>This Year's Best</h3>
<a class="btn btn-primary" href="#" role="button">See all</a>
</div>
</div>
</section>
<section class="container">
<div class="row">
<figure class="col-sm-6">
<p>kitchen</p>
<img src="https://s3.amazonaws.com/codecademy-content/projects/make-a-website/lesson-4/kitchen.jpg" />
</figure>
<figure class="col-sm-6">
<p>woodwork</p>
<img src="https://s3.amazonaws.com/codecademy-content/projects/make-a-website/lesson-4/woodwork.jpg" />
</figure>
</div>
<div class="row">
<figure class="col-sm-6">
<p>gifts</p>
<img src="https://s3.amazonaws.com/codecademy-content/projects/make-a-website/lesson-4/gifts.jpg" />
</figure>
<figure class="col-sm-6">
<p>antiques</p>
<img src="https://s3.amazonaws.com/codecademy-content/projects/make-a-website/lesson-4/antique.jpg" />
</figure>
</div>
</section>
<footer class="container">
<div class="row">
<p class="col-sm-4">
© 2017 Skillfair
</p>
<ul class="col-sm-8">
<li class="col-sm-1"><img src="https://s3.amazonaws.com/codecademy-content/projects/make-a-website/lesson-4/twitter.svg"></li>
<li class="col-sm-1"><img src="https://s3.amazonaws.com/codecademy-content/projects/make-a-website/lesson-4/facebook.svg"></li>
<li class="col-sm-1"><img src="https://s3.amazonaws.com/codecademy-content/projects/make-a-website/lesson-4/instagram.svg"></li>
<li class="col-md-1"><img src="https://s3.amazonaws.com/codecademy-content/projects/make-a-website/lesson-4/medium.svg"></li>
</ul>
</div>
</footer>
<script type='text/javascript' src='script.js'></script>
</body>
</html>最佳答案
.nav .sub-menu {
position: absolute;
display: none;
background-color: rgb(100, 100, 100);
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
// padding: 0.5em 2em 0.5em 0.75em; // remove this
padding: 0px;
}
.sub-menu li a {
text-decoration: none;
cursor: pointer;
color: white;
width: auto;
text-align: left;
white-space: nowrap;
// padding: 10px 0; // remove this
padding: 10px;
}