导航中的两个元素的背景颜色

时间:2017-12-03 14:58:05

标签: javascript jquery html css

我需要在div中添加两个元素的效果。我尝试选择他们的ID(以及其他一些方式)但是没有按预期工作。也许我没有成功,因为我对HTML / CSS没有深入的了解。

以下是我最近尝试过的一个示例 -

<style>
#container {
    margin: 0 auto;
    max-width: 890px;
}
.toggle, [id^=drop] {
    display: none;
}
nav {
    margin: 0;
    padding: 0;
    width: 100%;
    padding-top: .4em;
    padding-bottom: .4em;
    background-color: #FFF;
    border-bottom: 2px solid #BBB;
    box-shadow: 3px 3px 5px 3px #CCC;
    z-index: 100;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
}
#menuBar{
    background-color: #2D2D2D;
}
#logo {
    display: block;
    padding: 0 20px;
    float: left;
    font-size: 20px;
    line-height: 40px;
}
nav ul {
    float: right;
    padding: 0;
    margin: 0;
    list-style: none;
    position: relative;
}
nav ul li {
    margin: 0px;
    display: inline-block;
    float: left;
    background-color: #2D2D2D;
}
nav a {
    display: block;
    padding: 0 20px;
    color: #4CAF50;
    font-size: 18px;
    font-weight: 700;
    line-height: 40px;
    text-decoration: none;
}
</style>

</head>
    <body id="top" data-gr-c-s-loaded="true">
        <nav>
            <div id="menuBar">
                <div id="logo">nMess</div>
                <label for="drop" class="toggle menu">Menu</label> <input type="checkbox" id="drop">
                <ul class="menu">
                    <li><a href="homepage">Home</a></li>
                    <li><a href="bazarExchange">Bazar Exchange</a></li>
                    <li><a href="bazarValidate">Bazar Validate</a></li>
                    <li><a href="profile">Profile</a></li>
                    <li><a class="alertBtn" href="logout">Logout</a></li>
                </ul>
            </div>
        </nav>
    </body>
</html>

这是一个screeshot现在看起来像什么 - enter image description here

但我想要这个 - enter image description here

注意:我不希望整个背景颜色变灰,在白色背景中想要灰色。

3 个答案:

答案 0 :(得分:3)

解决方案1:将import tkinter as tk root = tk.Tk() root.title("Untitled") titleVar = tk.StringVar() titleVar.set("Something") def change_title(): titleVar.set("Title changed!") print(titleVar.get()) tk.Button(text="Update", command=change_title).pack() root.mainloop() 与浮动

一起使用

你已将clearfix放在background-color: #2D2D2D;上,但它会折叠到零高度 - 因为它的所有子项都是浮动或隐藏的。您应该使用clearfix来避免它(注意#menuBar上的.clearfix类):

#menuBar
#container {
    margin: 0 auto;
    max-width: 890px;
}
.toggle, [id^=drop] {
    display: none;
}
nav {
    margin: 0;
    padding: 0;
    width: 100%;
    padding-top: .4em;
    padding-bottom: .4em;
    background-color: #FFF;
    border-bottom: 2px solid #BBB;
    box-shadow: 3px 3px 5px 3px #CCC;
    z-index: 100;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
}
#menuBar{
    background-color: #2D2D2D;
}
#logo {
    display: block;
    padding: 0 20px;
    float: left;
    font-size: 20px;
    line-height: 40px;
}
nav ul {
    float: right;
    padding: 0;
    margin: 0;
    list-style: none;
    position: relative;
}
nav ul li {
    margin: 0px;
    display: inline-block;
    float: left;
    background-color: #2D2D2D;
}
nav a {
    display: block;
    padding: 0 20px;
    color: #4CAF50;
    font-size: 18px;
    font-weight: 700;
    line-height: 40px;
    text-decoration: none;
}

.clearfix:after {
    content: "."; 
    visibility: hidden; 
    display: block; 
    height: 0; 
    clear: both;
}

解决方案2:使用<body id="top" data-gr-c-s-loaded="true"> <nav> <div id="menuBar" class="clearfix"> <div id="logo">nMess</div> <label for="drop" class="toggle menu">Menu</label> <input type="checkbox" id="drop"> <ul class="menu"> <li><a href="homepage">Home</a></li> <li><a href="bazarValidate">Bazar Validate</a></li> <li><a href="profile">Profile</a></li> <li><a class="alertBtn" href="logout">Logout</a></li> </ul> </div> </nav> </body>

您可以使用线性渐变来制作多色背景(请注意linear-gradient上的.gradient类):

nav
#container {
    margin: 0 auto;
    max-width: 890px;
}
.toggle, [id^=drop] {
    display: none;
}
nav {
    margin: 0;
    padding: 0;
    width: 100%;
    padding-top: .4em;
    padding-bottom: .4em;
    background-color: #FFF;
    border-bottom: 2px solid #BBB;
    box-shadow: 3px 3px 5px 3px #CCC;
    z-index: 100;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
}
#logo {
    display: block;
    padding: 0 20px;
    float: left;
    font-size: 20px;
    line-height: 40px;
}
nav ul {
    float: right;
    padding: 0;
    margin: 0;
    list-style: none;
    position: relative;
}
nav ul li {
    margin: 0px;
    display: inline-block;
    float: left;
}
nav a {
    display: block;
    padding: 0 20px;
    color: #4CAF50;
    font-size: 18px;
    font-weight: 700;
    line-height: 40px;
    text-decoration: none;
}

.gradient {
    background: linear-gradient(to bottom, #fff 0%, #fff 10%, #2d2d2d 10%, #2d2d2d 90%, #fff 90%, #fff 100%);
}

答案 1 :(得分:2)

您可以更改背景的HTML元素导航,如下所示:

nav {
  background-color: #2D2D2D;
}

如果你仍然想要在顶部和底部有一个白色边框,你可以像这样添加一个:

nav {
  background-color: #2D2D2D;
  border-top: 5px solid #fff;
  border-bottom: 5px solid #fff;
}

答案 2 :(得分:0)

https://jsfiddle.net/Liamm12/onjxwz88/

你好!

这就是你要做的事情!

HTML:

       <nav>
            <div id="menuBar">
                <ul class="menu">

                    <li> <div id="logo">nMess</div>
                                    <label for="drop" class="toggle menu">Menu</label> <input type="checkbox" id="drop">
                    </li>
<div class="right">

                    <li><a href="homepage">Home</a></li>
                    <li><a href="bazarExchange">Bazar Exchange</a></li>
                    <li><a href="bazarValidate">Bazar Validate</a></li>
                    <li><a href="profile">Profile</a></li>
                    <li><a class="alertBtn" href="logout">Logout</a></li></div>
                </ul>
            </div>
        </nav>

CSS:

#container {
    margin: 0 auto;
    max-width: 890px;
}
.toggle, [id^=drop] {
    display: none;
}

#menuBar{
    background-color: #2D2D2D;
}
#logo {
    display: block;
    padding: 0 20px;
    float: left;
    font-size: 20px;
    line-height: 40px;
      color:#fff;
}
nav {
    margin: 0;
    padding: 0;
    width: 100%;
    padding-top: .4em;
    padding-bottom: .4em;
    background-color: #FFF;
    border-bottom: 2px solid #BBB;
    box-shadow: 3px 3px 5px 3px #CCC;
    z-index: 100;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
}
nav ul {
    float: left;
    padding: 0;
    margin: 0;
    list-style: none;
    width:100%;
        background-color: #2D2D2D;
}
nav ul div.right{
  float:right;
}

nav ul li {
    float: left;
}
nav a {
    display: block;
    padding: 0 20px;
    color: #4CAF50;
    font-size: 18px;
    font-weight: 700;
    line-height: 40px;
    text-decoration: none;
}

enter image description here