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.

 

 

css样式入门(建立样式模板)

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