From 33058f2b292b3a581333bdfb21b8f671898c5060 Mon Sep 17 00:00:00 2001 From: Peter Bengtsson Date: Tue, 8 Dec 2020 14:40:17 -0500 Subject: initial commit --- files/zh-cn/web/css/justify-items/index.html | 164 +++++++++++++++++++++++++++ 1 file changed, 164 insertions(+) create mode 100644 files/zh-cn/web/css/justify-items/index.html (limited to 'files/zh-cn/web/css/justify-items') diff --git a/files/zh-cn/web/css/justify-items/index.html b/files/zh-cn/web/css/justify-items/index.html new file mode 100644 index 0000000000..f633239a93 --- /dev/null +++ b/files/zh-cn/web/css/justify-items/index.html @@ -0,0 +1,164 @@ +--- +title: justify-items +slug: Web/CSS/justify-items +translation_of: Web/CSS/justify-items +--- +
{{CSSRef}}
+ +

CSS 的 justify-items 属性为所有盒中的项目定义了默认的 {{CSSxRef("justify-self")}} ， 可以使这些项目以默认方式沿适当轴线对齐到每个盒子。

+ +
{{EmbedInteractiveExample("pages/css/justify-items.html")}}
+ + + +

该属性的作用效果取决于我们使用的布局模式：

+ + + +

语法规则

+ +
/* Basic keywords */
+justify-items: auto;
+justify-items: normal;
+justify-items: stretch;
+
+/* Positional alignment */
+justify-items: center;     /* Pack items around the center */
+justify-items: start;      /* Pack items from the start */
+justify-items: end;        /* Pack items from the end */
+justify-items: flex-start; /* Pack flex items from the start */
+justify-items: flex-end;   /* Pack flex items from the end */
+justify-items: self-start;
+justify-items: self-end;
+justify-items: left;       /* Pack items from the left */
+justify-items: right;      /* Pack items from the right */
+
+/* Baseline alignment */
+justify-items: baseline;
+justify-items: first baseline;
+justify-items: last baseline;
+
+/* Overflow alignment (for positional alignment only) */
+justify-items: safe center;
+justify-items: unsafe center;
+
+/* Legacy alignment */
+justify-items: legacy right;
+justify-items: legacy left;
+justify-items: legacy center;
+
+/* Global values */
+justify-items: inherit;
+justify-items: initial;
+justify-items: unset;
+
+ +

此属性可以采用四种不同的形式之一：

+ + + +

值

+ +
+
auto
+
使用的值是父元素的justify-items属性的值，除非该方框没有父元素，或者是绝对定位的，在这些情况下，auto 代表 normal。
+
normal
+
这个关键字的效果取决于我们所处的布局模式： +
    +
  • 在块级布局中，相当于是 start。
    • +
  • In absolutely-positioned layouts, the keyword behaved like start on replaced absolutely-positioned boxes, and as stretch on all other absolutely-positioned boxes.
    • +
  • In table cell layouts, this keyword has no meaning as this property is ignored.
    • +
  • In flexbox layouts, this keyword has no meaning as this property is ignored.
    • +
  • In grid layouts, this keyword leads to a behavior similar to the one of stretch, except for boxes with an aspect ratio or an intrinsic sizes where it behaves like start.
    • +
+
+
start
+
The item is packed flush to each other toward the start edge of the alignment container in the appropriate axis.
+
end
+
The item is packed flush to each other toward the end edge of the alignment container in the appropriate axis.
+
flex-start
+
For items that are not children of a flex container, this value is treated like start.
+
flex-end
+
For items that are not children of a flex container, this value is treated like end.
+
self-start
+
The item is packed flush to the edge of the alignment container of the start side of the item, in the appropriate axis.
+
self-end
+
The item is packed flush to the edge of the alignment container of the end side of the item, in the appropriate axis.
+
center
+
The items are packed flush to each other toward the center of the of the alignment container.
+
left
+
The items are packed flush to each other toward the left edge of the alignment container. If the property’s axis is not parallel with the inline axis, this value behaves like start.
+
right
+
The items are packed flush to each other toward the right edge of the alignment container in the appropriate axis. If the property’s axis is not parallel with the inline axis, this value behaves like start.
+
baseline
+ first baseline
+ last baseline
+
Specifies participation in first- or last-baseline alignment: aligns the alignment baseline of the box’s first or last baseline set with the corresponding baseline in the shared first or last baseline set of all the boxes in its baseline-sharing group.
+ The fallback alignment for first baseline is start, the one for last baseline is end.
+
stretch
+
If the combined size of the items is less than the size of the alignment container, any auto-sized items have their size increased equally (not proportionally), while still respecting the constraints imposed by {{CSSxRef("max-height")}}/{{CSSxRef("max-width")}} (or equivalent functionality), so that the combined size exactly fills the alignment container.
+
safe
+
If the size of the item overflows the alignment container, the item is instead aligned as if the alignment mode were start.
+
unsafe
+
Regardless of the relative sizes of the item and alignment container, the given alignment value is honored.
+
legacy
+
Makes the value inherited by the box descendants. Note that if a descendant has a justify-self: auto value, the legacy keyword is not considered by the descend, only the left, right, or center value associated to it.
+
+ +

Formal syntax

+ +
{{CSSSyntax}}
+ +

规范

+ + + + + + + + + + + + + + + + +
SpecificationStatusComment
{{SpecName("CSS3 Box Alignment", "#propdef-justify-items", "justify-items")}}{{Spec2("CSS3 Box Alignment")}}Initial definition
+ +

{{CSSInfo}}

+ +

浏览器兼容性

+ + + +

Support in Flex layout

+ +

{{Compat("css.properties.justify-items.flex_context")}}

+ +

Support in Grid layout

+ +

{{Compat("css.properties.justify-items.grid_context")}}

+ +

另见

+ + -- cgit v1.2.3-54-g00ecf