Detailed explanation of the box model in CSS_html/css_WEB-ITnose
Many people are confused by the box model. Let’s analyze the structure of the box model through a simple code!
For convenience and convenience viewing! Draw a table in the first div and set its size to be the same as the div content! And set the body's margin and padding properties to 0px;
This example uses inline CSS style!
The code is as follows:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>盒子模型</title></head><body style="margin:0px; padding:0px;"><div style="width:900px; height::auto"> <div style="width:900px; height:100px; background-color:#021; color:#FFF; padding:25px; margin:25px;border: 50px solid #0CF; "> <table width="900px" height="100px" border="1" cellspacing="0" cellpadding="0" bordercolor="#FF0000"> <tr > <td style="text-align:center; font-size:36px;">Javalittleman</td> </tr> </table> </div> <div style="width:30%; height:120px; float:left; background-color:#063; border-color:#039;"></div> <div style="width:70%; height:120px;float:left; background-color:#123;"></div> <div style="width:900px; height:120px;float:left; background-color:#111;"></div></div></body></html>
Turn on the ruler!
Have you discovered anything?
The analysis is as follows:
Display effect:
Other table settings are fixed, which means that the content size will not change, only the position will change!
border: It is a border that expands outwards and can add color attributes to it;
margin: it expands outwards and has no color attributes, so we see The expanded color is the external color, which in this case is colorless!
padding: It is filled inward and has no color attribute. The color displayed is the color set by the internal content!
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