css 例子
@ -155,3 +155,36 @@ body{
|
||||
7. 浏览器自定义或继承
|
||||
|
||||
**总结排序:!important > 行内样式>ID选择器 > 类选择器 > 标签 > 通配符 > 继承 > 浏览器默认属性**
|
||||
|
||||
|
||||
|
||||
### css 常用属性
|
||||
|
||||
width:数值 px (单位) 设置宽度
|
||||
|
||||
height:数值 px(单位) 设置高度
|
||||
|
||||
background: 英文颜色或者16进制颜色码(如\#ff0000)或者rgb颜色码(如rgb(255,0,0))或者图片( url('文件路径') ) 设置背景颜色
|
||||
|
||||
color:英文颜色或者16进制颜色码(如\#ff0000)或者rgb颜色码(如rgb(255,0,0)) 设置字体颜色
|
||||
|
||||
border: 1px solid red 1px 是边框宽度 solid 是线条类型为直线 red 为边框颜色
|
||||
|
||||
border-radius:29px 边框圆角
|
||||
|
||||
font-size:13px 字体大小
|
||||
|
||||
font-weight:normal(正常默认) 或者 bold(加粗)
|
||||
|
||||
line-height:20px 设置行高
|
||||
|
||||
text-align:left( 左对齐) center (居中) right(右对齐) 文字对齐方式
|
||||
|
||||
overflow :auto(滚动条)/ hidden (隐藏) 横向和纵向内容溢出的表现
|
||||
|
||||
overflow-x:auto(滚动条)/ hidden (隐藏) 横向内容溢出的表现
|
||||
|
||||
overflow-y:auto(滚动条)/ hidden (隐藏) 纵向内容溢出的表现
|
||||
|
||||
|
||||
|
||||
|
BIN
csspress/2.盒模型.assets/1072590-20161225165033198-1543996399.png
Normal file
After Width: | Height: | Size: 365 KiB |
BIN
csspress/2.盒模型.assets/image-20201218160440679.png
Normal file
After Width: | Height: | Size: 32 KiB |
BIN
csspress/2.盒模型.assets/image-20210104085742577.png
Normal file
After Width: | Height: | Size: 6.6 KiB |
BIN
csspress/2.盒模型.assets/image-20210112113853593.png
Normal file
After Width: | Height: | Size: 5.9 KiB |
BIN
csspress/2.盒模型.assets/image-20210112114420660.png
Normal file
After Width: | Height: | Size: 43 KiB |
BIN
csspress/2.盒模型.assets/image-20210118112058180.png
Normal file
After Width: | Height: | Size: 31 KiB |
BIN
csspress/2.盒模型.assets/image-20210118112453705.png
Normal file
After Width: | Height: | Size: 33 KiB |
@ -38,11 +38,11 @@ css 盒模型包括如下要素
|
||||
- 边框(border)
|
||||
- 外边距(margin)
|
||||
|
||||
![image-20201218160440679](E:\web\测试lesson\kejian\css\盒模型.assets\image-20201218160440679.png)
|
||||
![image-20201218160440679](E:\web\lessons\课件\csspress\2.盒模型.assets\image-20201218160440679.png)
|
||||
|
||||
|
||||
|
||||
![image-20210104085742577](C:\Users\Administrator\AppData\Roaming\Typora\typora-user-images\image-20210104085742577.png)
|
||||
![image-20210104085742577](E:\web\lessons\课件\csspress\2.盒模型.assets\image-20210104085742577.png)
|
||||
|
||||
|
||||
|
||||
@ -97,7 +97,7 @@ css 盒模型包括如下要素
|
||||
|
||||
(一)
|
||||
|
||||
![image-20210112113853593](C:\Users\Administrator\AppData\Roaming\Typora\typora-user-images\image-20210112113853593.png)
|
||||
![image-20210112113853593](E:\web\lessons\课件\csspress\2.盒模型.assets\image-20210112113853593.png)
|
||||
|
||||
|
||||
|
||||
@ -151,7 +151,7 @@ div11的高度为0 的时候,div1的margin值由 div1,div11,div12的margin合
|
||||
|
||||
如此例中,div1的margin 值为30
|
||||
|
||||
![image-20210112114420660](C:\Users\Administrator\AppData\Roaming\Typora\typora-user-images\image-20210112114420660.png)
|
||||
![image-20210112114420660](E:\web\lessons\课件\csspress\2.盒模型.assets\image-20210112114420660.png)
|
||||
|
||||
|
||||
|
||||
@ -206,5 +206,72 @@ div11的高度为0 的时候,div1的margin值由 div1,div11,div12的margin合
|
||||
|
||||
|
||||
|
||||
解决措施:
|
||||
|
||||
给外边距加上如下属性,可以解决外边距合并的问题
|
||||
|
||||
border-top: 1px solid white; 给父元素加上边框
|
||||
|
||||
overflow: hidden; 设置超出隐藏
|
||||
|
||||
padding-top:50px; 给父盒子加padding-top 可以实现同样的效果
|
||||
|
||||
|
||||
|
||||
margin 复合属性
|
||||
|
||||
上右下左
|
||||
|
||||
例如:
|
||||
|
||||
margin 一个值得时候定义的是上下左右四个方向的边距
|
||||
两个值得时候定义的前一个值是上下的边距 后面的值是左右的边距
|
||||
三个值得时候第一个值是上边距 第二个值是左右边距 第三个值是下边距
|
||||
四个值得时候是上右下左的边距
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
padding复合属性
|
||||
|
||||
上右下左
|
||||
|
||||
例如:
|
||||
|
||||
padding一个值得时候定义的是上下左右四个方向的边距
|
||||
两个值得时候定义的前一个值是上下的边距 后面的值是左右的边距
|
||||
三个值得时候第一个值是上边距 第二个值是左右边距 第三个值是下边距
|
||||
四个值得时候是上右下左的边距
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
练习1:
|
||||
|
||||
五环之歌 效果如下:
|
||||
![image-20210118112058180](E:\web\lessons\课件\csspress\2.盒模型.assets\image-20210118112058180.png)
|
||||
|
||||
作业2:
|
||||
|
||||
分类菜单 效果如下
|
||||
|
||||
![image-20210118112453705](E:\web\lessons\课件\csspress\2.盒模型.assets\image-20210118112453705.png)
|
||||
|
||||
作业三:
|
||||
|
||||
效果如下:
|
||||
|
||||
![img](E:\web\lessons\课件\csspress\2.盒模型.assets\1072590-20161225165033198-1543996399.png)
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
注:
|
||||
|
||||
左下角录制工具的水印不用做
|
||||
|
||||
图片可以自定义
|
BIN
csspress/3.定位.assets/image-20210104095232481.png
Normal file
After Width: | Height: | Size: 1.4 KiB |
BIN
csspress/3.定位.assets/image-20210104101111002.png
Normal file
After Width: | Height: | Size: 992 B |
BIN
csspress/3.定位.assets/image-20210104102616301.png
Normal file
After Width: | Height: | Size: 2.4 KiB |
BIN
csspress/3.定位.assets/image-20210104104339420.png
Normal file
After Width: | Height: | Size: 1002 B |
BIN
csspress/3.定位.assets/image-20210104113658613.png
Normal file
After Width: | Height: | Size: 9.4 KiB |
BIN
csspress/3.定位.assets/image-20210104115013701.png
Normal file
After Width: | Height: | Size: 2.0 KiB |
BIN
csspress/3.定位.assets/image-20210104115040341.png
Normal file
After Width: | Height: | Size: 1.4 KiB |
BIN
csspress/3.定位.assets/image-20210118113158799.png
Normal file
After Width: | Height: | Size: 393 KiB |
BIN
csspress/3.定位.assets/image-20210118113652011.png
Normal file
After Width: | Height: | Size: 429 KiB |
BIN
csspress/3.定位.assets/image-20210118172837051.png
Normal file
After Width: | Height: | Size: 69 KiB |
BIN
csspress/3.定位.assets/image-20210118172910611.png
Normal file
After Width: | Height: | Size: 175 KiB |
BIN
csspress/3.定位.assets/image-20210118172934691.png
Normal file
After Width: | Height: | Size: 168 KiB |
BIN
csspress/3.定位.assets/image-20210118173020931.png
Normal file
After Width: | Height: | Size: 973 KiB |
BIN
csspress/3.定位.assets/image-20210118173115050.png
Normal file
After Width: | Height: | Size: 71 KiB |
@ -1,5 +1,31 @@
|
||||
# 定位(position)
|
||||
|
||||
### 为什么要使用定位
|
||||
|
||||
请问以下状况用标准流或者浮动可以实现吗?
|
||||
|
||||
- 想让广告右下角的切换的那三个点图标 在广告框内自由移动位置,并且会压住下面的盒子 覆盖在最上面
|
||||
|
||||
![image-20210118113158799](E:\web\lessons\课件\csspress\3.定位.assets\image-20210118113158799.png)
|
||||
|
||||
|
||||
|
||||
- 不管滚动条滚动到什么位置 ,元素都始终固定在原来的位置不变
|
||||
|
||||
![image-20210118113652011](E:\web\lessons\课件\csspress\3.定位.assets\image-20210118113652011.png)
|
||||
|
||||
**结论** :
|
||||
|
||||
1. 以上的两种情况 用普通的文档流和浮动都不能快速实现,此时要用定位来实现
|
||||
|
||||
2. 浮动和定位的区别
|
||||
|
||||
浮动可以让多个块级盒子一行内没有缝隙排列显示 经常用于
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
position 用来定义元素在网页上的位置,常用的有五种:
|
||||
|
||||
- static 正常的页面流,position属性的默认值
|
||||
@ -8,13 +34,19 @@ position 用来定义元素在网页上的位置,常用的有五种:
|
||||
- fixed 固定定位
|
||||
- sticky 粘性布局
|
||||
|
||||
语法:
|
||||
|
||||
position:定位方式
|
||||
|
||||
方向:偏移值
|
||||
|
||||
|
||||
|
||||
### static
|
||||
|
||||
这时浏览器会按照源码的顺序决定元素的位置,这样称为“正常的页面流”。块级元素占据自己的区块,元素之间不重叠。
|
||||
|
||||
![image-20210104095232481](C:\Users\Administrator\AppData\Roaming\Typora\typora-user-images\image-20210104095232481.png)
|
||||
![image-20210104095232481](E:\web\lessons\课件\csspress\3.定位.assets\image-20210104095232481.png)
|
||||
|
||||
html:
|
||||
|
||||
@ -57,7 +89,7 @@ absolute 基于父元素定位,通过 top,bottom,left,right 四个属性规定
|
||||
|
||||
|
||||
|
||||
![image-20210104101111002](C:\Users\Administrator\AppData\Roaming\Typora\typora-user-images\image-20210104101111002.png)
|
||||
![image-20210104101111002](E:\web\lessons\课件\csspress\3.定位.assets\image-20210104101111002.png)
|
||||
|
||||
html 不变 css如下:
|
||||
|
||||
@ -79,7 +111,7 @@ div{
|
||||
|
||||
上面的例子里,第一个灰色的div(以下叫A)并没有出现在页面上,因为这时候给A 添加了position:absolute 属性,使他脱离正常的文档流 然后他下面(从上到下依次叫B,C),B,C并没有脱离文档流,所以会移动到上面来,把A覆盖
|
||||
|
||||
![image-20210104102616301](C:\Users\Administrator\AppData\Roaming\Typora\typora-user-images\image-20210104102616301.png)
|
||||
![image-20210104102616301](E:\web\lessons\课件\csspress\3.定位.assets\image-20210104102616301.png)
|
||||
|
||||
html:
|
||||
|
||||
@ -120,7 +152,7 @@ css:
|
||||
|
||||
相对定位,选中元素不会脱离文档流,相对于其自身位置进行移动,通过top,bottom,left,right 属性进行规定
|
||||
|
||||
![image-20210104104339420](C:\Users\Administrator\AppData\Roaming\Typora\typora-user-images\image-20210104104339420.png)
|
||||
![image-20210104104339420](E:\web\lessons\课件\csspress\3.定位.assets\image-20210104104339420.png)
|
||||
|
||||
```
|
||||
<style>
|
||||
@ -186,7 +218,7 @@ css:
|
||||
</style>
|
||||
```
|
||||
|
||||
![image-20210104113658613](C:\Users\Administrator\AppData\Roaming\Typora\typora-user-images\image-20210104113658613.png)
|
||||
![image-20210104113658613](E:\web\lessons\课件\csspress\3.定位.assets\image-20210104113658613.png)
|
||||
|
||||
|
||||
|
||||
@ -242,10 +274,38 @@ css:
|
||||
|
||||
滚动前:
|
||||
|
||||
![image-20210104115013701](C:\Users\Administrator\AppData\Roaming\Typora\typora-user-images\image-20210104115013701.png)
|
||||
![image-20210104115013701](E:\web\lessons\课件\csspress\3.定位.assets\image-20210104115013701.png)
|
||||
|
||||
|
||||
|
||||
滚动后:
|
||||
|
||||
![image-20210104115040341](C:\Users\Administrator\AppData\Roaming\Typora\typora-user-images\image-20210104115040341.png)
|
||||
![image-20210104115040341](E:\web\lessons\课件\csspress\3.定位.assets\image-20210104115040341.png)
|
||||
|
||||
作业一
|
||||
|
||||
![image-20210118172837051](E:\web\lessons\课件\csspress\3.定位.assets\image-20210118172837051.png)
|
||||
|
||||
|
||||
|
||||
作业二
|
||||
|
||||
![image-20210118172910611](E:\web\lessons\课件\csspress\3.定位.assets\image-20210118172910611.png)
|
||||
|
||||
|
||||
|
||||
作业三
|
||||
|
||||
![image-20210118172934691](E:\web\lessons\课件\csspress\3.定位.assets\image-20210118172934691.png)
|
||||
|
||||
|
||||
|
||||
作业4
|
||||
|
||||
![image-20210118173020931](E:\web\lessons\课件\csspress\3.定位.assets\image-20210118173020931.png)
|
||||
|
||||
|
||||
|
||||
作业5
|
||||
|
||||
![image-20210118173115050](E:\web\lessons\课件\csspress\3.定位.assets\image-20210118173115050.png)
|
BIN
csspress/csspress.zip
Normal file
8
csspress/demo/.idea/demo.iml
Normal file
@ -0,0 +1,8 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<module type="PYTHON_MODULE" version="4">
|
||||
<component name="NewModuleRootManager">
|
||||
<content url="file://$MODULE_DIR$" />
|
||||
<orderEntry type="inheritedJdk" />
|
||||
<orderEntry type="sourceFolder" forTests="false" />
|
||||
</component>
|
||||
</module>
|
12
csspress/demo/.idea/inspectionProfiles/Project_Default.xml
Normal file
@ -0,0 +1,12 @@
|
||||
<component name="InspectionProjectProfileManager">
|
||||
<profile version="1.0">
|
||||
<option name="myName" value="Project Default" />
|
||||
<inspection_tool class="PyPep8NamingInspection" enabled="true" level="WEAK WARNING" enabled_by_default="true">
|
||||
<option name="ignoredErrors">
|
||||
<list>
|
||||
<option value="N802" />
|
||||
</list>
|
||||
</option>
|
||||
</inspection_tool>
|
||||
</profile>
|
||||
</component>
|
@ -0,0 +1,6 @@
|
||||
<component name="InspectionProjectProfileManager">
|
||||
<settings>
|
||||
<option name="USE_PROJECT_PROFILE" value="false" />
|
||||
<version value="1.0" />
|
||||
</settings>
|
||||
</component>
|
8
csspress/demo/.idea/modules.xml
Normal file
@ -0,0 +1,8 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project version="4">
|
||||
<component name="ProjectModuleManager">
|
||||
<modules>
|
||||
<module fileurl="file://$PROJECT_DIR$/.idea/demo.iml" filepath="$PROJECT_DIR$/.idea/demo.iml" />
|
||||
</modules>
|
||||
</component>
|
||||
</project>
|
6
csspress/demo/.idea/vcs.xml
Normal file
@ -0,0 +1,6 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project version="4">
|
||||
<component name="VcsDirectoryMappings">
|
||||
<mapping directory="$PROJECT_DIR$/../.." vcs="Git" />
|
||||
</component>
|
||||
</project>
|
37
csspress/demo/.idea/workspace.xml
Normal file
@ -0,0 +1,37 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project version="4">
|
||||
<component name="ChangeListManager">
|
||||
<list default="true" id="1a809e5f-af9b-4af6-ad05-8377cd49b05b" name="Default Changelist" comment="" />
|
||||
<option name="SHOW_DIALOG" value="false" />
|
||||
<option name="HIGHLIGHT_CONFLICTS" value="true" />
|
||||
<option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
|
||||
<option name="LAST_RESOLUTION" value="IGNORE" />
|
||||
</component>
|
||||
<component name="Git.Settings">
|
||||
<option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$/../.." />
|
||||
</component>
|
||||
<component name="ProjectId" id="1nEKiqsAzxjfTabj7kX1m5ezM5s" />
|
||||
<component name="ProjectLevelVcsManager" settingsEditedManually="true" />
|
||||
<component name="ProjectViewState">
|
||||
<option name="hideEmptyMiddlePackages" value="true" />
|
||||
<option name="showLibraryContents" value="true" />
|
||||
</component>
|
||||
<component name="PropertiesComponent">
|
||||
<property name="RunOnceActivity.OpenProjectViewOnStart" value="true" />
|
||||
<property name="RunOnceActivity.ShowReadmeOnStart" value="true" />
|
||||
<property name="settings.editor.selected.configurable" value="configurable.group.appearance" />
|
||||
</component>
|
||||
<component name="SvnConfiguration">
|
||||
<configuration />
|
||||
</component>
|
||||
<component name="TaskManager">
|
||||
<task active="true" id="Default" summary="Default task">
|
||||
<changelist id="1a809e5f-af9b-4af6-ad05-8377cd49b05b" name="Default Changelist" comment="" />
|
||||
<created>1610949940462</created>
|
||||
<option name="number" value="Default" />
|
||||
<option name="presentableId" value="Default" />
|
||||
<updated>1610949940462</updated>
|
||||
</task>
|
||||
<servers />
|
||||
</component>
|
||||
</project>
|
37
csspress/demo/boxsize.html
Normal file
@ -0,0 +1,37 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||
<title>Document</title>
|
||||
<style>
|
||||
.box{
|
||||
width:1000px;
|
||||
height:300px;
|
||||
background: gold;
|
||||
}
|
||||
.box1{
|
||||
width:50px;
|
||||
height: 50px;
|
||||
background:red;
|
||||
}
|
||||
.box2{
|
||||
width:500px;
|
||||
height:500px;
|
||||
background: blue;
|
||||
}
|
||||
.box3{
|
||||
background:pink;
|
||||
}
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<div class="box">
|
||||
<div class="box1">aaa</div>
|
||||
<span class="box2">bbb</span>
|
||||
<span class="box3">cccc</span>
|
||||
|
||||
</div>
|
||||
|
||||
</body>
|
||||
</html>
|
@ -16,11 +16,11 @@
|
||||
margin: 20px;
|
||||
}
|
||||
.box1{
|
||||
width:60px;
|
||||
height: 60px;
|
||||
/* width:60px;
|
||||
height: 60px; */
|
||||
background: red;
|
||||
/* background: rgba(255, 0, 0, 0.363); */
|
||||
float: left;
|
||||
/* float: left; */
|
||||
|
||||
|
||||
}
|
||||
@ -30,7 +30,7 @@
|
||||
background: gray;
|
||||
border: 1px solid pink;
|
||||
/* float:right */
|
||||
float: right;
|
||||
float: left;
|
||||
}
|
||||
.a{
|
||||
/* width: 70px;
|
||||
@ -43,7 +43,10 @@
|
||||
</head>
|
||||
<body>
|
||||
<div class="box">
|
||||
<div class="box1"></div>
|
||||
<div class="box1">asaaaa</div>
|
||||
<div class="box2"></div>
|
||||
<div class="box2"></div>
|
||||
<!-- <div class="box1"></div>
|
||||
<div class="box1"></div>
|
||||
<div class="box1"></div>
|
||||
<div class="box1"></div>
|
||||
@ -57,7 +60,7 @@
|
||||
<div class="box2">5</div>
|
||||
<div class="box2" style="height: 180px;">6</div>
|
||||
<div class="a"></div>
|
||||
<div>nhjksahkihfi</div>
|
||||
<div>nhjksahkihfi</div> -->
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
45
csspress/demo/margin.html
Normal file
@ -0,0 +1,45 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||
<title>Document</title>
|
||||
<style>
|
||||
.box{
|
||||
width:1000px;
|
||||
height:300px;
|
||||
background: gold;
|
||||
}
|
||||
.box1{
|
||||
width:50px;
|
||||
height: 50px;
|
||||
background:red;
|
||||
}
|
||||
.box2{
|
||||
/* width:80px; */
|
||||
height:50px;
|
||||
background: blue;
|
||||
margin-left: 20px;
|
||||
margin-right: 20px;
|
||||
}
|
||||
.box3{
|
||||
background:pink;
|
||||
}
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<div class="box1">aaa</div>
|
||||
<div class="box2">bbb</div>
|
||||
|
||||
<p>
|
||||
总结margin 一个值得时候定义的是上下左右四个方向的边距
|
||||
<p>两个值得时候定义的前一个值是上下的边距 后面的值是左右的边距</p>
|
||||
<p>三个值得时候第一个值是上边距 第二个值是左右边距 第三个值是下边距</p>
|
||||
<p>四个值得时候是上右下左的边距</p>
|
||||
|
||||
|
||||
|
||||
</p>
|
||||
|
||||
</body>
|
||||
</html>
|
42
csspress/demo/margin2.html
Normal file
@ -0,0 +1,42 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||
<title>Document</title>
|
||||
<style>
|
||||
.box{
|
||||
width:1000px;
|
||||
height:300px;
|
||||
background: gold;
|
||||
}
|
||||
.box1{
|
||||
width:50px;
|
||||
height: 50px;
|
||||
background:red;
|
||||
margin-bottom: 50px;
|
||||
}
|
||||
.box2{
|
||||
width:50px;
|
||||
height:50px;
|
||||
background: blue;
|
||||
margin-top: 100px;
|
||||
}
|
||||
.box3{
|
||||
background:pink;
|
||||
}
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<div class="box1">中国</div>
|
||||
<div class="box2">美国</div>
|
||||
|
||||
<p>
|
||||
总结:当给中国加下边距(100px)和给美国(50)加上边距的时候 ,会发生外边距合并的现象
|
||||
即 中国和美国的外边距等于中国和美国的外边距中较大的那个值 此例中 中美外边距为100px
|
||||
</p>
|
||||
|
||||
|
||||
|
||||
</body>
|
||||
</html>
|
47
csspress/demo/margin3.html
Normal file
@ -0,0 +1,47 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||
<title>Document</title>
|
||||
<style>
|
||||
.box{
|
||||
width:600px;
|
||||
height:300px;
|
||||
background: gold;
|
||||
/* padding-top:50px;
|
||||
border-top: 1px solid white;
|
||||
overflow: hidden; */
|
||||
}
|
||||
.box1{
|
||||
width:50px;
|
||||
height: 50px;
|
||||
background:red;
|
||||
|
||||
/* margin-top: 50px; */
|
||||
}
|
||||
.box2{
|
||||
width:50px;
|
||||
height:50px;
|
||||
background: blue;
|
||||
margin-top: 100px;
|
||||
}
|
||||
.box3{
|
||||
background:pink;
|
||||
}
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<div class="box">
|
||||
<div class="box1">中国</div>
|
||||
</div>
|
||||
|
||||
<p>总结:当只给中国加上边距时,他外层的父元素也会跟着往下移动 ,这种现象叫父子级的边距合并
|
||||
解决方式:padding-top:50px;
|
||||
border-top: 1px solid white;
|
||||
overflow: hidden
|
||||
|
||||
</p>
|
||||
|
||||
</body>
|
||||
</html>
|
53
csspress/demo/paddiing.html
Normal file
@ -0,0 +1,53 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||
<title>Document</title>
|
||||
<style>
|
||||
.box{
|
||||
width:600px;
|
||||
height:300px;
|
||||
background: gold;
|
||||
/* padding-top:50px;
|
||||
border-top: 1px solid white;
|
||||
overflow: hidden; */
|
||||
}
|
||||
.box1{
|
||||
background:red;
|
||||
/* padding: 30px; */
|
||||
/* margin-top: 50px; */
|
||||
}
|
||||
.box2{
|
||||
background: blue;
|
||||
/* padding-left: 20px;
|
||||
padding-top: 20px;
|
||||
padding-right: 20px;
|
||||
padding-bottom: 20px; */
|
||||
/* padding:20px 10px; */
|
||||
padding: 30px 20px 5px;
|
||||
/* padding: 40px 20px 5px 10px; */
|
||||
}
|
||||
.box3{
|
||||
background:pink;
|
||||
}
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<span class="box2">盘古</span>
|
||||
<span class="box3">女娲</span>
|
||||
|
||||
<div class="box1">京东</div>
|
||||
|
||||
<p>
|
||||
总结:padding 一个值得时候定义的是上下左右四个方向的边距
|
||||
<p>两个值得时候定义的前一个值是上下的边距 后面的值是左右的边距</p>
|
||||
<p>三个值得时候第一个值是上边距 第二个值是左右边距 第三个值是下边距</p>
|
||||
<p>四个值得时候是上右下左的边距</p>
|
||||
|
||||
|
||||
|
||||
</p>
|
||||
|
||||
</body>
|
||||
</html>
|
11
csspress/demo/position.html
Normal file
@ -0,0 +1,11 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||
<title>Document</title>
|
||||
</head>
|
||||
<body>
|
||||
|
||||
</body>
|
||||
</html>
|
55
csspress/demo2/boxmodel.html
Normal file
@ -0,0 +1,55 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||
<title>Document</title>
|
||||
<style>
|
||||
* {
|
||||
margin: 0;
|
||||
padding: 0;
|
||||
}
|
||||
|
||||
div {
|
||||
width: 120px;
|
||||
height: 120px;
|
||||
float: left;
|
||||
}
|
||||
|
||||
.box1 {
|
||||
background: blue;
|
||||
}
|
||||
|
||||
.box2 {
|
||||
background: green;
|
||||
height: 80px;
|
||||
border: 1px solid white;
|
||||
|
||||
}
|
||||
|
||||
.box {
|
||||
width: 900px;
|
||||
height: 600px;
|
||||
background: pink;
|
||||
|
||||
}
|
||||
.box3{
|
||||
width: 120px;
|
||||
height:120px;
|
||||
background:gold;
|
||||
/* clear: both; */
|
||||
}
|
||||
</style>
|
||||
</head>
|
||||
|
||||
<body>
|
||||
<div class="box">
|
||||
<div class="box1"></div>
|
||||
<div class="box2"></div>
|
||||
<p class="box3">暖暖</p>
|
||||
</div>
|
||||
|
||||
</body>
|
||||
|
||||
</html>
|
44
csspress/demo2/position.html
Normal file
@ -0,0 +1,44 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||
<title>Document</title>
|
||||
<style>
|
||||
* {
|
||||
margin: 0;
|
||||
padding: 0;
|
||||
}
|
||||
|
||||
body{
|
||||
overflow: auto;
|
||||
}
|
||||
.box1 {
|
||||
background: yellow;
|
||||
position: sticky;
|
||||
top: 0;
|
||||
width: 100%;
|
||||
/* height: 50px; */
|
||||
}
|
||||
|
||||
.box2 {
|
||||
width: 50px;
|
||||
height: 20px;
|
||||
background: red;
|
||||
}
|
||||
.box3{
|
||||
width: 60px;
|
||||
height: 900px;
|
||||
background: pink;
|
||||
}
|
||||
</style>
|
||||
</head>
|
||||
|
||||
<body>
|
||||
<div class="box1">暖暖</div>
|
||||
<div class="box2"></div>
|
||||
<div class="box3"></div>
|
||||
</body>
|
||||
|
||||
</html>
|
3
csspress/float.md
Normal file
@ -0,0 +1,3 @@
|
||||
# 浮动(float)
|
||||
|
||||
|
BIN
csspress/image-20210118112058180.png
Normal file
After Width: | Height: | Size: 31 KiB |