记录 bootstrap 的一些知识

Grid

Grid options

垂直对齐： align-items-center， align-items-start，align-items-end

单独设置某个列的对齐方式：align-self-start，align-self-center， align-self-end

<div class="row">
    <div class="col align-self-start">

水平对齐： justify-content-start, justify-content-center,justify-content-end,justify-content-around,justify-content-between(对齐到两边，中间为空)

<div class="row justify-content-start">
    <div class="col-4">

	Extra small <576px	Small ≥576px	Medium ≥768px	Large ≥992px	Extra large ≥1200px
Max container width	None (auto)	540px	720px	960px	1140px
Class prefix	.col-	.col-sm-	.col-md-	.col-lg-	.col-xl-
# of columns	12
Gutter width（.no-gutters）	30px (15px on each side of a column)
Nestable（可嵌套）	Yes
Column ordering	Yes

col-md-auto 根据内容自动调整宽度

每行两列，row-cols 快速设置

<div class="row row-cols-1 row-cols-sm-2 row-cols-md-4">

强制换行

<div class="row">
    <div class="col-6 col-sm-4">.col-6 .col-sm-4</div>
    <div class="col-6 col-sm-4">.col-6 .col-sm-4</div>

    <!-- Force next columns to break to new line at md breakpoint and up -->
    <div class="w-100 d-none d-md-block"></div>

使用.order-类来控制内容的视觉顺序

<div class="container">
  <div class="row">
    <div class="col order-last">
      First in DOM, ordered last
    </div>
    <div class="col order-4">
      Second in DOM, unordered
   1150 </div>
    <div class="col order-first">
      Third in DOM, ordered first
    </div>
  </div>
</div>

偏移列

<div class="row">
    <div class="col-md-4">.col-md-4</div>
    <div class="col-md-4 offset-md-4">.col-md-4 .offset-md-4</div>
  </div>

尺寸 Size

w-25 : 25%宽度

h-25：25%的高度

mw-100： max-width: 100%

mh-100：max-height: 100%

相对于视口 viewport 的尺寸

min-vw-100 min-width 100vw

min-vh-100 min-height 100vh

vm-100 width 100vw

vh-100 height 100vh

间隔 Spacing

mx-auto 水平居中

margin padding

• m - for classes that set margin
• p - for classes that set padding

Where sides is one of:

• t - for classes that set margin-top or padding-top
• b - for classes that set margin-bottom or padding-bottom
• l - for classes that set margin-left or padding-left
• r - for classes that set margin-right or padding-right
• x - for classes that set both *-left and *-right
• y - for classes that set both *-top and *-bottom
• blank - for classes that set a margin or padding on all 4 sides of the element

Where size is one of:

• 0 - for classes that eliminate the margin or padding by setting it to 0
• 1 - (by default) for classes that set the margin or padding to $spacer * .25
• 2 - (by default) for classes that set the margin or padding to $spacer * .5
• 3 - (by default) for classes that set the margin or padding to $spacer
• 4 - (by default) for classes that set the margin or padding to $spacer * 1.5
• 5 - (by default) for classes that set the margin or padding to $spacer * 3
• auto - for classes that set the margin to auto

Text

text-wrap 让文字换行

text-justify 对齐到组件

text-left, text-center, text-right

text-nowrap 防止文字换行

text-truncate 将文本截断并添加省略号，必须是 display: inline-block 或 display: bolck 类型

text-lowercase, uppercase, capitalize 首字母大写

text-reset 重置文本或链接的颜色，以便从父元素继承颜色属性

text-decoration-none 去除文字的装饰， 不带下换线的链接

Visibility

仍然占据页面空间

.visible

.invisible