我从启动引导开始就使用干净的博客模板时遇到问题。
http://startbootstrap.com/template-overviews/clean-blog/
我正在尝试向导航栏添加一个下拉菜单，但是当导航栏位于页面顶部时，菜单项不会显示。但是，一旦向下滚动一点，菜单项就会出现。
我知道这与从透明导航栏设计到白色背景导航栏设计的过渡有关。对于如何解决这个问题，有任何的建议吗？
码：
<!-- Navigation -->
<nav class="navbar navbar-default navbar-custom navbar-fixed-top">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header page-scroll">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="index.html">UBC Guidebook</a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav navbar-right">
<li>
<a href="index.html">Home</a>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Learn <b class="caret"></b></a>
<ul class="dropdown-menu">
<li>
<a href="pages/academics.html">Academics</a>
</li>
<li>
<a href="pages/culture.html">Campus Culture</a>
</li>
<li>
<a href="pages/involved.html">Getting Involved</a>
</li>
<li>
<a href="pages/adventure.html">Adventure</a>
</li>
<li>
<a href="pages/food.html">Places to Eat</a>
</li>
</ul>
</li>
<li>
<a href="about.html">About</a>
</li>
<li>
<a href="contact.html">Contact</a>
</li>
</ul>
</div>
<!-- /.navbar-collapse -->
</div>
<!-- /.container -->
</nav>/*!
* Clean Blog v1.0.0 (http://startbootstrap.com)
* Copyright 2014 Start Bootstrap
* Licensed under Apache 2.0 (https://github.com/IronSummitMedia/startbootstrap/blob/gh-pages/LICENSE)
*/
body {
font-family: 'Lora', 'Times New Roman', serif;
font-size: 20px;
color: #404040;
}
p {
line-height: 1.5;
margin: 30px 0;
}
p a {
text-decoration: underline;
}
h1,
h2,
h3,
h4,
h5,
h6 {
font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
font-weight: 800;
}
a {
color: #404040;
}
a:hover,
a:focus {
color: #0085a1;
}
a img:hover,
a img:focus {
cursor: zoom-in;
}
blockquote {
color: #808080;
font-style: italic;
}
hr.small {
max-width: 100px;
margin: 15px auto;
border-width: 4px;
border-color: white;
}
.navbar-custom {
position: absolute;
top: 0;
left: 0;
width: 100%;
z-index: 3;
font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
}
.navbar-custom .navbar-brand {
font-weight: 800;
}
.navbar-custom .nav li a {
text-transform: uppercase;
font-size: 12px;
font-weight: 800;
letter-spacing: 1px;
}
@media only screen and (min-width: 768px) {
.navbar-custom {
background: transparent;
border-bottom: 1px solid transparent;
}
.navbar-custom .navbar-brand {
color: white;
padding: 20px;
}
.navbar-custom .navbar-brand:hover,
.navbar-custom .navbar-brand:focus {
color: rgba(255, 255, 255, 0.8);
}
.navbar-custom .nav li a {
color: white;
padding: 20px;
}
.navbar-custom .nav li a:hover,
.navbar-custom .nav li a:focus {
color: rgba(255, 255, 255, 0.8);
}
}
@media only screen and (min-width: 1170px) {
.navbar-custom {
-webkit-transition: background-color 0.3s;
-moz-transition: background-color 0.3s;
transition: background-color 0.3s;
/* Force Hardware Acceleration in WebKit */
-webkit-transform: translate3d(0, 0, 0);
-moz-transform: translate3d(0, 0, 0);
-ms-transform: translate3d(0, 0, 0);
-o-transform: translate3d(0, 0, 0);
transform: translate3d(0, 0, 0);
-webkit-backface-visibility: hidden;
backface-visibility: hidden;
}
.navbar-custom.is-fixed {
/* when the user scrolls down, we hide the header right above the viewport */
position: fixed;
top: -61px;
background-color: rgba(255, 255, 255, 0.9);
border-bottom: 1px solid #f2f2f2;
-webkit-transition: -webkit-transform 0.3s;
-moz-transition: -moz-transform 0.3s;
transition: transform 0.3s;
}
.navbar-custom.is-fixed .navbar-brand {
color: #404040;
}
.navbar-custom.is-fixed .navbar-brand:hover,
.navbar-custom.is-fixed .navbar-brand:focus {
color: #0085a1;
}
.navbar-custom.is-fixed .nav li a {
color: #404040;
}
.navbar-custom.is-fixed .nav li a:hover,
.navbar-custom.is-fixed .nav li a:focus {
color: #0085a1;
}
.navbar-custom.is-visible {
/* if the user changes the scrolling direction, we show the header */
-webkit-transform: translate3d(0, 100%, 0);
-moz-transform: translate3d(0, 100%, 0);
-ms-transform: translate3d(0, 100%, 0);
-o-transform: translate3d(0, 100%, 0);
transform: translate3d(0, 100%, 0);
}
}
.intro-header {
background-color: #808080;
background: no-repeat center center;
background-attachment: scroll;
-webkit-background-size: cover;
-moz-background-size: cover;
background-size: cover;
-o-background-size: cover;
margin-bottom: 50px;
}
.intro-header .site-heading,
.intro-header .post-heading,
.intro-header .page-heading {
padding: 100px 0 50px;
color: white;
}
@media only screen and (min-width: 768px) {
.intro-header .site-heading,
.intro-header .post-heading,
.intro-header .page-heading {
padding: 150px 0;
}
}
.intro-header .site-heading,
.intro-header .page-heading {
text-align: center;
}
.intro-header .site-heading h1,
.intro-header .page-heading h1 {
margin-top: 0;
font-size: 50px;
}
.intro-header .site-heading .subheading,
.intro-header .page-heading .subheading {
font-size: 24px;
line-height: 1.1;
display: block;
font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
font-weight: 300;
margin: 10px 0 0;
}
@media only screen and (min-width: 768px) {
.intro-header .site-heading h1,
.intro-header .page-heading h1 {
font-size: 80px;
}
}
.intro-header .post-heading h1 {
font-size: 35px;
}
.intro-header .post-heading .subheading,
.intro-header .post-heading .meta {
line-height: 1.1;
display: block;
}
.intro-header .post-heading .subheading {
font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
font-size: 24px;
margin: 10px 0 30px;
font-weight: 600;
}
.intro-header .post-heading .meta {
font-family: 'Lora', 'Times New Roman', serif;
font-style: italic;
font-weight: 300;
font-size: 20px;
}
.intro-header .post-heading .meta a {
color: white;
}
@media only screen and (min-width: 768px) {
.intro-header .post-heading h1 {
font-size: 55px;
}
.intro-header .post-heading .subheading {
font-size: 30px;
}
}
.post-preview > a {
color: #404040;
}
.post-preview > a:hover,
.post-preview > a:focus {
text-decoration: none;
color: #0085a1;
}
.post-preview > a > .post-title {
font-size: 30px;
margin-top: 30px;
margin-bottom: 10px;
}
.post-preview > a > .post-subtitle {
margin: 0;
font-weight: 300;
margin-bottom: 10px;
}
.post-preview > .post-meta {
color: #808080;
font-size: 18px;
font-style: italic;
margin-top: 0;
}
.post-preview > .post-meta > a {
text-decoration: none;
color: #404040;
}
.post-preview > .post-meta > a:hover,
.post-preview > .post-meta > a:focus {
color: #0085a1;
text-decoration: underline;
}
@media only screen and (min-width: 768px) {
.post-preview > a > .post-title {
font-size: 36px;
}
}
.section-heading {
font-size: 36px;
margin-top: 60px;
font-weight: 700;
}
.caption {
text-align: center;
font-size: 14px;
padding: 10px;
font-style: italic;
margin: 0;
display: block;
border-bottom-right-radius: 5px;
border-bottom-left-radius: 5px;
}
footer {
padding: 50px 0 65px;
}
footer .list-inline {
margin: 0;
padding: 0;
}
footer .copyright {
font-size: 14px;
text-align: center;
margin-bottom: 0;
}
.floating-label-form-group {
font-size: 14px;
position: relative;
margin-bottom: 0;
padding-bottom: 0.5em;
border-bottom: 1px solid #eeeeee;
}
.floating-label-form-group input,
.floating-label-form-group textarea {
z-index: 1;
position: relative;
padding-right: 0;
padding-left: 0;
border: none;
border-radius: 0;
font-size: 1.5em;
background: none;
box-shadow: none !important;
resize: none;
}
.floating-label-form-group label {
display: block;
z-index: 0;
position: relative;
top: 2em;
margin: 0;
font-size: 0.85em;
line-height: 1.764705882em;
vertical-align: middle;
vertical-align: baseline;
opacity: 0;
-webkit-transition: top 0.3s ease,opacity 0.3s ease;
-moz-transition: top 0.3s ease,opacity 0.3s ease;
-ms-transition: top 0.3s ease,opacity 0.3s ease;
transition: top 0.3s ease,opacity 0.3s ease;
}
.floating-label-form-group::not(:first-child) {
padding-left: 14px;
border-left: 1px solid #eeeeee;
}
.floating-label-form-group-with-value label {
top: 0;
opacity: 1;
}
.floating-label-form-group-with-focus label {
color: #0085a1;
}
form .row:first-child .floating-label-form-group {
border-top: 1px solid #eeeeee;
}
.btn {
font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
text-transform: uppercase;
font-size: 14px;
font-weight: 800;
letter-spacing: 1px;
border-radius: 0;
padding: 15px 25px;
}
.btn-lg {
font-size: 16px;
padding: 25px 35px;
}
.btn-default:hover,
.btn-default:focus {
background-color: #0085a1;
border: 1px solid #0085a1;
color: white;
}
.pager {
margin: 20px 0 0;
}
.pager li > a,
.pager li > span {
font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
text-transform: uppercase;
font-size: 14px;
font-weight: 800;
letter-spacing: 1px;
padding: 15px 25px;
background-color: white;
border-radius: 0;
}
.pager li > a:hover,
.pager li > a:focus {
color: white;
background-color: #0085a1;
border: 1px solid #0085a1;
}
.pager .disabled > a,
.pager .disabled > a:hover,
.pager .disabled > a:focus,
.pager .disabled > span {
color: #808080;
background-color: #404040;
cursor: not-allowed;
}
::-moz-selection {
color: white;
text-shadow: none;
background: #0085a1;
}
::selection {
color: white;
text-shadow: none;
background: #0085a1;
}
img::selection {
color: white;
background: transparent;
}
img::-moz-selection {
color: white;
background: transparent;
}
body {
webkit-tap-highlight-color: #0085a1;
}最佳答案
这将是导致它的CSS规则，您应该将其更改为其他颜色，然后就不必为Lia添加单独的样式规则。您还需要更改悬停和焦点颜色的下一个规则。
.navbar-custom .nav li a {
color: white;
padding: 20px;
}
关于jquery - Startbootstrap干净的博客模板缺陷，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/36345863/