Question

我有一个黑暗的主题/灯光主题按钮，它运作良好，但我只是想知道如何更改导航栏的背景颜色。这是我的代码：

＆＃13;

BEGIN;
CREATE TABLE `base_testmodel` (
    `id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY, 
    `name` varchar(32) NOT NULL, 
    `x` integer NOT NULL, 
    `y` integer NULL, 
    `z` integer NULL
    );
COMMIT;

＆＃13;

body {
  margin: 0px;
  padding: 0px;
  overflow-y: scroll;
  font-family: Helvetica;
  font-size: 18px;
  background-color: #bdbdbd;
}

.nav {
  background-color: #222;
  position: relative;
  width: 100%;
}

.nav_wrapper {
  width: 960px;
  margin: 0 auto;
  text-align: left;
}

.nav ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
  position: relative;
}

.nav ul li {
  display: inline-block;
  background-color: #222;
  transition: background-color 0.3s ease-in;
  position: relative;
  padding-top: 3px;
  padding-bottom: 3px;
}

.nav ul li img {
  width: 12px;
  height: 10px;
  vertical-align: middle;
  padding-left: 10px;
}

.nav ul li a,visited {
  display: block;
  padding: 15px;
  text-decoration: none;
  transition: color 0.2s ease-in;
}

.nav ul li a:hover {
  text-decoration: none;
  color: #099;
}

.navhome {
  color: #099;
  border-bottom: 3px solid #099;
}

.navother {
  color: #ccc;
}

.content {
  text-align: center;
  line-height: 130%;
  font-size: 20px;
  display: inline-block;
}

.bdaimg {
  width: 50%;
  display: block;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 40px;
  margin-top: 30px;
  transform: scale(1);
  transition-duration: 0.3s;
  border-radius: 15px;
}

.bdaimg:hover {
  transform: scale(1.1);
  transition-duration: 0.3s;
}

.nu {
  font-weight: bold;
  font-size: 25px;
}

h3 {
  font-weight: bold;
  text-decoration: underline;
}

h2 {
  font-weight: bold;
  text-decoration: underline;
}

.bdaimg2 {
  display: block;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 40px;
  margin-top: 30px;
  transform: scale(1);
  transition-duration: 0.3s;
  border-radius: 15px;
}

.bdaimg2:hover {
  transform: scale(1.1);
  transition-duration: 0.3s;
}

/*Light Switch*/
label {
  display: block;
  height: 25px;
  width: 100px;
  background: white;
  text-align: center;
  font: 14px/25px Helvetica, Arial, sans-serif;
  margin: 20px 0;
  position: absolute;
}
 
label:hover {
  background: #ddca7e;
  color: white;
  cursor: pointer;
}
 
input#lightswitch {
   position: fixed ;
   top: -9999px;
   left: -9999px;
}

input#lightswitch + .content {
  background-color: #bdbdbd;
  transition: background-color 0.5s ease-in;
}

/*Switched Off*/
input#lightswitch:checked + .content  {
  background-color: #222;
  transition: background-color 0.5s ease-in;
}
 
input#lightswitch:checked + .content {
  color: white;
  transition: color 0.5s ease-in;
}
 
input#lightswitch:checked + .content {
  color: white;
  transition: color 0.5s ease-in;
}

＆＃13;

Answer 1

您无法定位导航的样式，因为它在输入之前。如果您能够更改元素的顺序，那么输入在导航之前，然后定位在您想要的位置。

<label for="lightswitch">Light Switch</label>
<input type="checkbox" id="lightswitch" />
<div class="nav">...</div>
<div class="content">...</div>

然后将其添加到css：

label { top: 50px; } //whatever position you need
input#lightswitch ~ .content {
  background-color: #bdbdbd;
  transition: background-color 0.5s ease-in;
}

/*Switched Off*/
input#lightswitch:checked ~ .content  {
  background-color: #222;
  transition: background-color 0.5s ease-in;
}

input#lightswitch:checked ~ .content {
  color: white;
  transition: color 0.5s ease-in;
}

input#lightswitch:checked ~ .nav {
  background-color: #bdbdbd; //whatever color you need
  transition: background-color 0.5s ease-in;
}
input#lightswitch:checked ~ .nav .nav_wrapper ul li {
  background-color: #bdbdbd; 
  transition: background-color 0.5s ease-in;
}

fiddle

如何使主题按钮影响整个页面（HTML，CSS）

1 个答案: