# CSS與CSS3
定位
```
<pre class="calibre14">```
<span class="token2">.</span>c<span class="token2">{</span>
position<span class="token2">:</span> absolute<span class="token2">;</span><span class="token6">//脫離文檔 絕對定位</span>
relative 相對定位
fixeld 不滾動
static 默認
z<span class="token">-</span>index<span class="token2">:</span> <span class="token3">1</span><span class="token2">;</span>層關系
top<span class="token2">:</span> auto<span class="token2">;</span>
left<span class="token2">:</span> auto<span class="token2">;</span>
right<span class="token2">:</span> auto<span class="token2">;</span>
bottom<span class="token2">:</span> auto<span class="token2">;</span>
<span class="token2">}</span>
```
```
布局
```
<pre class="calibre14">```
<span class="token2">.</span>c<span class="token2">{</span>
display<span class="token2">:</span>inline<span class="token2">;</span>默認內聯元素
none 隱藏
block 塊元素
inline<span class="token">-</span>block 內聯塊元素
float<span class="token2">:</span>none<span class="token2">;</span>不浮動
left right
clear<span class="token2">:</span> both<span class="token2">;</span>清除浮動
visibility<span class="token2">:</span> visible<span class="token2">;</span>對象可視
hidden對象隱藏
overflow<span class="token2">:</span> visible<span class="token2">;</span>溢出內容不作處理<span class="token2">,</span>可能超出容器
hidden隱藏不出現滾動條
scroll滾動
auto溢出出現滾動<span class="token2">,</span>不溢出沒有
overflow<span class="token">-</span>x<span class="token2">:</span> visible<span class="token2">;</span>
overflow<span class="token">-</span>y<span class="token2">:</span> visible<span class="token2">;</span>
同上<span class="token2">,</span>表示水平方向和垂直方向
<span class="token2">}</span>
```
```
尺寸,支持像素 em 百分比等
```
<pre class="calibre14">```
<span class="token2">.</span>c<span class="token2">{</span>
width<span class="token2">:</span> auto<span class="token2">;</span>
<span class="token3">12</span>px <span class="token3">10</span><span class="token">%</span>
min<span class="token">-</span>width<span class="token2">:</span> <span class="token3">0</span><span class="token2">;</span>
max<span class="token">-</span>width<span class="token2">:</span> none<span class="token2">;</span>沒有最大寬度
height<span class="token2">:</span> auto<span class="token2">;</span>
min<span class="token">-</span>height<span class="token2">:</span> <span class="token3">0</span><span class="token2">;</span>
max<span class="token">-</span>height<span class="token2">:</span> none<span class="token2">;</span>
<span class="token2">}</span>
```
```
內外補白
```
<pre class="calibre14">```
<span class="token2">.</span>c<span class="token2">{</span>
margin<span class="token2">:</span> auto<span class="token2">;</span>可以負值
margin<span class="token">-</span>top<span class="token2">:</span> auto<span class="token2">;</span>上
margin<span class="token">-</span>bottom<span class="token2">:</span> auto<span class="token2">;</span>下
margin<span class="token">-</span>left<span class="token2">:</span> auto<span class="token2">;</span>
margin<span class="token">-</span>right<span class="token2">:</span> auto<span class="token2">;</span>
padding<span class="token2">:</span> <span class="token3">1</span>px<span class="token2">;</span>不可以負值<span class="token2">,</span>也沒有自動
padding<span class="token">-</span>bottom<span class="token2">:</span><span class="token3">1</span><span class="token">%</span><span class="token2">;</span>
padding<span class="token">-</span>top<span class="token2">:</span> inherit<span class="token2">;</span>
padding<span class="token">-</span>left<span class="token2">:</span> inherit<span class="token2">;</span>
padding<span class="token">-</span>right<span class="token2">:</span><span class="token3">1</span>px<span class="token2">;</span>
<span class="token2">}</span>
```
```
邊框
```
<pre class="calibre14">```
<span class="token2">.</span>c<span class="token2">{</span>
border<span class="token2">:</span> <span class="token3">1</span>px solid #fff<span class="token2">;</span>
border<span class="token">-</span>width<span class="token2">:</span> <span class="token3">1</span>px<span class="token2">;</span>
border<span class="token">-</span>style<span class="token2">:</span> solid<span class="token2">;</span>實線
none<span class="token2">;</span>沒有邊框<span class="token2">,</span>默認值
dotted<span class="token2">;</span>點狀
dashed<span class="token2">;</span>虛線
border<span class="token">-</span>color<span class="token2">:</span> #fff<span class="token2">;</span>
border<span class="token">-</span>top<span class="token2">:</span> <span class="token3">1</span>px solid #fff<span class="token2">;</span>
border<span class="token">-</span>bottom<span class="token2">:</span> <span class="token">!</span>important<span class="token2">;</span>
border<span class="token">-</span>left<span class="token2">:</span> <span class="token">!</span>important<span class="token2">;</span>
border<span class="token">-</span>right<span class="token2">:</span> <span class="token">!</span>important<span class="token2">;</span>
<span class="token2">}</span>
```
```
背景
```
<pre class="calibre14">```
<span class="token2">.</span>c<span class="token2">{</span>
background<span class="token2">:</span><span class="token1">url</span><span class="token2">(</span>test1<span class="token2">.</span>jpg<span class="token2">)</span> no<span class="token">-</span>repeat scroll <span class="token3">0</span><span class="token">%</span> <span class="token3">0</span><span class="token">%</span><span class="token2">;</span>
background<span class="token">-</span>color<span class="token2">:</span> transparent<span class="token2">;</span>默認透明
background<span class="token">-</span>image<span class="token2">:</span> none<span class="token2">;</span>無圖
<span class="token1">url</span><span class="token2">(</span><span class="token3">1.</span>img<span class="token2">)</span>
background<span class="token">-</span>repeat<span class="token2">:</span> repeat<span class="token2">;</span>平鋪
no<span class="token">-</span>repeat 不平鋪
repeat<span class="token">-</span>x <span class="token2">;</span>repeat<span class="token">-</span>y 橫縱平鋪
background<span class="token">-</span>attachment<span class="token2">:</span> scroll<span class="token2">;</span> 滾動
fixed<span class="token2">;</span>固定
background<span class="token">-</span>position<span class="token2">:</span> <span class="token3">0</span><span class="token">%</span> <span class="token3">0</span><span class="token">%</span><span class="token2">;</span>
left center right top bottom<span class="token2">;</span>
background<span class="token">-</span>origin<span class="token2">:</span> padding<span class="token">-</span>box<span class="token2">;</span>背景從content顯示
border<span class="token">-</span>box<span class="token2">;</span>從border區域開始
padding<span class="token">-</span>box<span class="token2">;</span>從padding開始
background<span class="token">-</span>clip<span class="token2">:</span> border<span class="token">-</span>box<span class="token2">;</span>從padding向外剪裁
border<span class="token">-</span>box<span class="token2">;</span>從border開始<span class="token2">,</span>不含
content<span class="token">-</span>box<span class="token2">;</span>從content開始剪切
text<span class="token2">;</span>從內容開始
background<span class="token">-</span>size<span class="token2">:</span> auto<span class="token2">;</span>背景大小自動
cover<span class="token2">;</span>等比縮放完全覆蓋<span class="token2">,</span>會出容器
contain<span class="token2">;</span>等比縮放寬高和容器相等<span class="token2">,</span>始終在容器內
<span class="token2">}</span>
```
```
顏色
```
<pre class="calibre14">```
<span class="token2">.</span>c<span class="token2">{</span>
color<span class="token2">:</span> #FFF<span class="token2">;</span>文本顏色
opacity<span class="token2">:</span> <span class="token3">1</span><span class="token2">;</span><span class="token3">1</span>是不透明 <span class="token3">0</span>完全透明 取值<span class="token3">0.0</span><span class="token">-</span><span class="token3">1</span>
<span class="token2">}</span>
```
```
字體
```
<pre class="calibre14">```
<span class="token2">.</span>c<span class="token2">{</span>
font<span class="token2">:</span> <span class="token3">12</span>px Simsun<span class="token2">,</span>arial<span class="token2">,</span>sans<span class="token">-</span>serif<span class="token2">;</span>
font<span class="token">-</span>style<span class="token2">:</span> normal<span class="token2">;</span>字體正常
italic<span class="token2">;</span>斜體
font<span class="token">-</span>weight<span class="token2">:</span> normal<span class="token2">;</span>正常相當于<span class="token3">400</span>
bold 粗體相當于<span class="token3">700</span>
bolder 特粗 相當于b strong
font<span class="token">-</span>size<span class="token2">:</span><span class="token3">12</span>px<span class="token2">;</span>
font<span class="token">-</span>family<span class="token2">:</span> arial<span class="token2">;</span>
<span class="token2">}</span>
```
```
文本
```
<pre class="calibre14">```
<span class="token2">.</span>c<span class="token2">{</span>
text<span class="token">-</span>transform<span class="token2">:</span> none<span class="token2">;</span>
capitalize<span class="token2">;</span>首字母大寫
uppercase<span class="token2">;</span>轉換大寫
lowercase<span class="token2">;</span>轉小寫
white<span class="token">-</span>space<span class="token2">:</span> normal<span class="token2">;</span>空格處理默認
pre<span class="token">-</span>wrap<span class="token2">;</span>不合并空白<span class="token2">,</span>邊界處換行
nowrap<span class="token2">;</span>強制同一行顯示<span class="token2">,</span>合并多余空白<span class="token2">,</span>直到br
word<span class="token">-</span><span class="token5">break</span><span class="token2">:</span> normal<span class="token2">;</span>換行
<span class="token5">break</span><span class="token">-</span>all<span class="token2">;</span>
word<span class="token">-</span>wrap<span class="token2">:</span> normal<span class="token2">;</span>
<span class="token5">break</span><span class="token">-</span>word<span class="token2">;</span>邊界處換行
text<span class="token">-</span>align<span class="token2">:</span> center<span class="token2">;</span>left<span class="token2">;</span>right<span class="token2">;</span>
text<span class="token">-</span>indent<span class="token2">:</span> <span class="token3">0</span><span class="token2">;</span>縮進
vertical<span class="token">-</span>align<span class="token2">:</span> baseline<span class="token2">;</span>
sub<span class="token2">;</span>下標
super<span class="token2">;</span>上標
middle<span class="token2">;</span>居中
line<span class="token">-</span>height<span class="token2">:</span> normal<span class="token2">;</span>行高
<span class="token2">}</span>
```
```
列表樣式
```
<pre class="calibre14">```
<span class="token2">.</span>c<span class="token2">{</span>
list<span class="token">-</span>style<span class="token2">:</span>disc outside none<span class="token2">;</span>
list<span class="token">-</span>style<span class="token">-</span>image<span class="token2">:</span> none<span class="token2">;</span>不指定圖像
list<span class="token">-</span>style<span class="token">-</span>position<span class="token2">:</span> outside<span class="token2">;</span>文本以外
inside<span class="token2">;</span>文本以內
list<span class="token">-</span>style<span class="token">-</span>type<span class="token2">:</span> disc<span class="token2">;</span>實心圓
circle<span class="token2">;</span>空心圓
square<span class="token2">;</span>實心方塊
decimal<span class="token2">;</span>數字
none<span class="token2">;</span>不使用
<span class="token2">}</span>
```
```
表格樣式
```
<pre class="calibre14">```
<span class="token2">.</span>c<span class="token2">{</span>
border<span class="token">-</span>collapse<span class="token2">:</span> collapse<span class="token2">;</span>合并邊框
<span class="token2">}</span>
```
```
用戶界面
```
<pre class="calibre14">```
<span class="token2">.</span>c<span class="token2">{</span>
text<span class="token">-</span>overflow<span class="token2">:</span> clip<span class="token2">;</span>文本溢出不顯示<span class="token2">.</span><span class="token2">.</span><span class="token2">.</span>
ellipsis<span class="token2">;</span>顯示
outline<span class="token2">:</span> none<span class="token2">;</span>輪廓樣式無輪廓
cursor<span class="token2">:</span> pointer<span class="token2">;</span>手 move移動
支持<span class="token1">url</span><span class="token2">(</span><span class="token2">)</span>
box<span class="token">-</span>sizing<span class="token2">:</span> content<span class="token">-</span>box<span class="token2">;</span>盒子padding和border不包括在寬高內
border<span class="token">-</span>box<span class="token2">;</span>包含內<span class="token2">;</span>
user<span class="token">-</span>select<span class="token2">:</span>text<span class="token2">;</span>可以選擇文本
none<span class="token2">;</span>文本不能選擇
<span class="token2">}</span>
```
```
選擇
```
<pre class="calibre16">```
ul<span class="token">></span>li<span class="token2">{</span>
<span class="token6">//子選擇器</span>
<span class="token2">}</span>
ul li<span class="token2">{</span>
<span class="token6">//包含選擇</span>
<span class="token2">}</span>
p<span class="token">+</span>p<span class="token2">{</span>
<span class="token6">//相鄰選擇</span>
<span class="token2">}</span>
p<span class="token">~</span>p<span class="token2">{</span>
<span class="token6">//兄弟選擇</span>
<span class="token2">}</span>
input<span class="token2">[</span>type<span class="token">=</span><span class="token4">"text"</span><span class="token2">]</span><span class="token2">{</span><span class="token2">{</span>
<span class="token6">//屬性選擇</span>
<span class="token2">}</span>
a<span class="token2">:</span>link<span class="token2">{</span>
<span class="token2">}</span>
a<span class="token2">:</span>visited<span class="token2">{</span>
<span class="token2">}</span>
a<span class="token2">:</span>hover<span class="token2">{</span>
<span class="token2">}</span>
a<span class="token2">:</span>active<span class="token2">{</span>
<span class="token2">}</span>
a<span class="token2">:</span>focus<span class="token2">{</span>
<span class="token2">}</span>
ul li<span class="token2">:</span>first<span class="token">-</span>child<span class="token2">{</span>
<span class="token6">//第一個</span>
<span class="token2">}</span>
ul li<span class="token2">:</span>last<span class="token">-</span>child<span class="token2">{</span>
<span class="token6">//最后一個</span>
<span class="token2">}</span>
```
```
- 簡介
- 第一章 數據庫
- Mysql/mariadb
- 函數
- 基礎
- 增刪改索引
- 標準查詢
- 高級查詢
- TIDB集群mysql解決方案
- Redis
- 語言基礎
- 5種數據類型
- 其他類型
- Sqlite
- 語言基礎
- 常用查詢
- 第二章 PHP
- 語言基礎
- 第一課 流程控制和運算
- 第二課 數組
- 第三課 日期時間
- 第四課 常用函數
- 第五課 字符串
- 第六課 文件操作
- 第七課 面向對象
- 第八課 正則表達式
- 第九課 圖片處理生成
- 第十課 curl/memche
- 第十一課 mysql和pdo
- 第十三課 cookie和session
- 第十四課 xml操作
- 第十五課 php5.3+新特性
- 第十六課 php7+
- 第十七課 密碼安全
- 廢棄函數
- php命令行
- redis應用
- 算法
- 排序算法
- 基礎算法
- 無限級分類
- 自定義函數Fn
- 查找算法
- 自定義函數數據函數fn
- laravel
- 路由
- 常用語句
- 數據庫
- dingo/api
- Yii2
- 控制器
- 常用類
- 數據庫
- redis
- thinkphp6
- TP6文檔
- TP6插件
- dedecms
- 織夢標簽大全
- 數據庫操作
- 內置函數和定義函數
- 織夢核心改動
- 織夢插件/底層標簽開發
- PHP相關工具
- composer
- php開發環境phpenv
- Phpstorm使用
- windows編譯php擴展
- PHP開源庫
- 開源項目管理禪道
- sns_auth
- php-casbin權限控制
- php-jwt
- 微信SDKeasywechat
- querylist采集庫
- workerman
- Box/Spout處理excel和csv
- dll擴展
- redis/memche/xdebug
- redis
- Lua
- php_xlswriter
- event
- swoole
- 常用代碼庫
- 微擎框架
- 第一課全局變量
- 第二課常用函數
- 第三課自定義微擎獨有函數
- 第四課數據庫操作
- 第五課微信端回復
- 第六課微擎高級操作
- 第八課global函數列表
- mainfest.xml詳解
- js方法
- 人人商城
- 第一課model解讀
- 第二課常用語句解讀
- 第三課常用js解讀
- 第四課附錄常見問題
- 第五課附錄處理報表|支付
- 常用JSON狀態碼
- 第三章 JavaScript
- js基礎
- 瀏覽器對象
- 語言基礎
- html5接口
- ES6新語法
- vue
- 基礎語法
- 京東vueUI組件
- uniapp
- 組件開發規范
- nodejs
- 基礎知識
- 安裝node
- nvm不同版本node切換
- js常用標準庫
- zepto/jquery
- weui
- js圖標庫
- elementUI
- validator表單驗證
- layer彈出層
- requirejs
- wow動畫
- 動畫animate
- swiper4
- 百度編輯器
- flyio/axios/qs
- jquery.form
- bootstrap3
- clipboard復制
- slideout側滑
- imagehover.css圖片懸停動畫
- webpack打包
- Bulma UI框架
- store 客戶端存儲
- lottie動畫創建庫
- sweetalert
- js自定義函數
- 常見JSSDK
- 微信公眾號JSSDK
- 騰訊地圖jssdk
- 微信小程序
- 第四章 編程語言
- markdown語言
- Dart語言
- Dart語言基礎
- Flutter框架
- Lua語言
- 字符串,數組,表
- 自定義方法
- go語言
- 第1.1語言基本語法
- 第1.2流程控制
- 第1.3函數
- 第1.4結構體
- 第1.5接口
- 第1.6包
- go語言框架Gin
- CSS3語言
- CSS與CSS3
- 選擇符
- 屬性
- css3
- loading動畫
- HTML5語言
- less
- sass
- C#
- 基礎知識
- 函數
- 第五章 開發工具
- git
- nginx/apache服務器
- Linux常用操作
- crontab定時任務
- 注冊表與cmd
- 阿里云ECS
- frp穿透和ssl續期
- 寶塔安裝
- 樹莓派
- 瀏覽器模擬
- 火狐/chrome常用插件
- WSL安裝使用
- mac brew和終端命令
- win10相關