带有“3D"的功能区影响 [英] Ribbon with a "3D" effect

问题描述

我的菜单有以下代码:

HTML:

<导航><ul class="菜单"><li><a href="#">首页</a></li><li><a href="#">page1</a></li><li><a href="#">page2</a></li></nav>

和 CSS:

.wrapper{填充:20px；背景:#d3d3d3;高度:200px；}.菜单{背景:#7F7979;}.menu li{填充顶部:20px；填充底部:20px；左边距:15px；显示:内联块；}.menu li a{白颜色;}导航{列表样式:无；保证金:0填充:0;}

我想要实现的是在左右角看起来像是来自容器后面(如果我们可以这样称呼它，就像一个 3D 效果).没有尝试过任何东西，因为我不知道如何实现这一目标.

我用谷歌搜索了一下，但没有找到任何网站来检查代码.如果有人知道，请指出.

另外，我怎样才能通过忽略 container padding 来做到这一点?是否可以在这个 container 中使用我的菜单来制作它，它有一个 padding 并且仍然迫使边距超出它?

注意:我不是要有人为我做这件事，我是想弄清楚我应该使用哪些 CSS 属性来实现我想要的.

为了更好地解释我想要什么:

如果有帮助，我的演示:

演示

非常感谢您为我指明了正确的方向.

解决方案

您可以在伪元素上使用边框来制作菜单栏左上角和右上角的 2 个较暗的三角形.

要使菜单栏比容器更宽，您可以使用负左/右外边距:

演示

header{宽度:80%；边距:0 自动；背景:#D3D3D3；填充:100px 0 200px;}导航{位置:相对；高度:50px；背景:#7E7979；边距:0 -25px；}导航:之前，导航:之后{内容:'';位置:绝对；顶部:-10px;边框底部:10px 虚线 #5C5C5B;}导航:之前{左:0;左边框:25px 实心透明；}导航:之后{右:0;右边框:25px 实心透明；}

<nav></nav></header>

I have the following code for my menu:

HTML:

<div class="container wrapper">
<nav>
    <ul class="menu">
        <li><a href="#">Home</a></li>
        <li><a href="#">page1</a></li>
        <li><a href="#">page2</a></li>
    </ul>
</nav>

And the CSS:

.wrapper{
    padding:20px;
    background:#d3d3d3;
    height:200px;

}
.menu{
    background:#7F7979;
}
.menu li{
    padding-top: 20px;
    padding-bottom: 20px;
    padding-left: 15px;
    display: inline-block;
}
.menu li a{
    color:white;
}
nav ul{
    list-style:none;
    margin:0
        padding:0;
}

What I want to achieve is at the right and left corners to look like it comes from behind the container (like a 3D effect if we can call it this way). Haven't tried anything since I don't have any idea how to achieve this.

I googled a bit but didn't find any website to inspect the code. If someone knows any, please point me out.

And plus, how can I do this by ignoring the container padding? Is it possible to make it with my menu inside this container which has a padding and still forcing the margins to go outside it?

NOTE: I'm not trying to someone do this for me, I'm trying to figure out what CSS properties should I use to achieve what I want.

To better explain what I wanted:

If it helps, my demo:

demo

Thank you so much for pointing me the right direction.

解决方案

You can use borders on pseudo elements to make the 2 darker triangles on the top left and right of your menu bar.

To make the menu bar wider than it's container, you can use negative left/right margins :

DEMO

header{
    width:80%;
    margin: 0 auto;
    background:#D3D3D3;
    padding:100px 0 200px;
}
nav{
    position:relative;
    height:50px;
    background: #7E7979;
    margin: 0 -25px;
}
nav:before, nav:after{
    content:'';
    position:absolute;
    top:-10px;
    border-bottom:10px dotted #5C5C5B;
}
nav:before{
    left:0;
    border-left:25px solid transparent;
}
nav:after{
    right:0;
    border-right:25px solid transparent;
}

<header>
    <nav></nav>
</header>

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