Why defind same class twice

[Stephen68]

Not sure if I'm reading into this right or not but I looked at some code where they defined values for a class twice. Not sure if this is

common practice or not, can anybody let me know. Here is a sample of what I mean

 

First they have it here

 

.water_bar, .blue_head_full, .blue_head_center, .blue_foot_center, .blue_head_filler {

    font-size: 8pt;

 

    height: 4.5ex;

 

    line-height:4.5ex;

    vertical-align: middle;

    text-align:left;

}

 

 

and then later on they put something like this later on in the page

 

.blue_head_full {

    text-align:center;

 

    position:absolute;

    top:0px;

    left:0px;

width:100%;

    border-top: 1px solid white;

}

 

 

Is this just to set values that are the same in all of those classes at once? Will to still keep the first

set of values after redefining the class again?

 

Sorry if this seems really silly but I just wanted to know, I can see I guess that it would save some typing for sure.

 

Stephen

[dropfaith]

ive done this a few times to save time yea  like all the values are the same except for one. ill do it  then have the one value  defined elsewhere..

 

but the fact that text-align center and text-align left are used to define the same element is odd