嵌套 CSS 网格是不好的做法吗?
我正在尝试使用组件驱动的前端框架,例如 Angular,最后学习 CSS Grid.
I'm experimenting with component driven front end frameworks, such as Angular, and finally learning CSS Grid.
我的问题是:嵌套 CSS Grids
是不好的做法吗?
My question is: is it bad practice to nest CSS Grids
?
我在这里所做的是在我的主/根组件中,我使用 css 网格来制作两件事:导航栏和主要内容区域,因为导航栏将出现在整个应用程序和主要内容中.
What I've done here is in my main/root component, I've used css grid to make two things: the navbar and the main content area, since navbar will be present in the entire app and also the main content.
如下所示,根级别的网格然后是 <nav-bar>
组件中的另一个网格.在主要内容区域中,还会有更多,可能在我使用的每个/任何 Angular 组件中都有一个网格.
As you can see below, the grid on the root level then another grid in the <nav-bar>
component. And in the main content area, there will be many more, probably a grid in each/any Angular component I use.
********************** ******************************
* Navbar * => * img | nav | logout *
********************** ******************************
**********************
* *
* Content *
* *
**********************
示例代码如下:
app.component.html
<div class="container">
<div class="item-navbar"></div>
<div class="item-nav">
<nav-bar></nav-bar>
</div>
<div class="item-content">
<router-outlet></router-outlet>
</div>
</div>
<!-- With this CSS: -->
<style>
.container {
display: grid;
grid: ". nav ."
". content ."
/ 3vh auto 3vh;
row-gap: 1vh;
}
.item-navbar {
grid-area: 1 / 1 / 2 / 4;
position: relative;
z-index: -1;
background: #579C87;
box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
}
.item-nav {
grid-area: nav;
}
.item-content {
grid-area: content;
background: #D1C7B8;
box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
}
</style>
那么nav-bar.component.html
<nav class="navbar" role="navigation" aria-label="main navigation">
<div class="navbar-brand">
<a class="navbar-item" routerLink="/">
<div class="img">
<img src="logo.jpg">
</div>
</a>
</div>
<div class="navbar-menu">
<a routerLink="/dashboard" class="navbar-item">Dashboard</a>
</div>
<div class="navbar-logout">
<a routerLink="/logout" class="navbar-item">Logout</a>
</div>
</nav>
<!-- with this CSS: -->
<style>
.navbar {
display: grid;
grid-template-columns: 64px auto auto;
grid-template-rows: auto;
grid-template-areas: "image navs logout";
gap: 1vh;
}
.navbar-brand {
grid-area: image;
place-self: center / start;
}
.navbar-menu {
grid-area: navs;
place-self: center start;
}
.navbar-logout {
grid-area: logout;
place-self: center end;
}
</style>
推荐答案
嵌套网格容器没有任何问题或无效.
There is nothing wrong or invalid with nesting grid containers.
网格规范不禁止,甚至不警告,实践.上面写着:
The grid specification doesn't prohibit, or even admonish, against the practice. It says this:
网格容器可以根据需要嵌套或与弹性容器混合,以创建更复杂的布局.
Grid containers can be nested or mixed with flex containers as necessary to create more complex layouts.
事实上,嵌套网格容器是您必须将网格属性应用于顶级容器的后代的操作,因为网格布局仅适用于父元素和子元素之间.
In fact, nesting grid containers is what you must do to apply grid properties to the descendants of a top-level container, since grid layout works only between parent and child elements.
更多细节在这里:
- 网格属性不适用于网格容器内的元素
- 在主容器中定位网格项的内容(子网格功能)
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