css样式入门(建立样式模板)

    从来没有重视过css样式.也从来没有他细研究过,这次改项目的界面,可吃苦头了.好了,现学现卖了.

页面的

在<head>中间加上这个.

  < style >
  .nodata
{
    font
-size:11px;
    color:red;
  }

 
</ style >

在页面上应用这个样式.

                 < tr >
                    
< td >
                        今天:
                    
</ td >
                    
< td >
                        API指数为:
                    
</ td >
                    
< td >
                    
< c: if  test = " ${cityDay.pollutionIndeces==null} " >< div  class = " nodata " > 暂无数据 </ div ></ c: if >     
                    
< c: if  test = " ${cityDay.pollutionIndeces!=null} " > $ {cityDay.pollutionIndeces} </ c: if >     
                    
</ td >
                    
< td >
                        级别:
                    
</ td >
                    
< td >
                       
< c: if  test = " ${cityDay.grade==null} " >< div  class = " nodata " > 暂无数据 </ div ></ c: if >
                       
< c: if  test = " ${cityDay.grade!=null} " > $ {cityDay.grade} </ c: if >
                    
</ td >
                    
< td >
                        状态:
                    
</ td >
                    
< td >
                        
< c: if  test = " ${cityDay.status==null} " >< div  class = " nodata " > 暂无数据 </ div ></ c: if >
                        
< c: if  test = " ${cityDay.status!=null} " > $ {cityDay.status } </ c: if >
                    
</ td >
                    
< td >
                        首要污染物:
                    
</ td >
                    
< td colspan = " 4 " >
                     
< c: if  test = " ${cityDay.mainPollutant==null} " >< div  class = " nodata " > 暂无数据 </ div ></ c: if >
                     
< c: if  test = " ${cityDay.mainPollutant!=null} " > $ {cityDay.mainPollutant} </ c: if >
                    
</ td >
                
</ tr >

先定底义一个样式,然后在页面上引用就可以了.这是最基本的,以后还要加强学习,有什么问题,就不用找美工了.

 

 

你可能感兴趣的:(c,css,null)