Text Formatting in ASP.NET using html and CSS

Sir, I am trying to create a ContactUs page in a webPage using CSS and html code.

I want your help in:- how conjunct CSS code(see below the contactUs page) to result the same page I created. Is my code is too long?

Here is the page I created.




And the CSS Code:-

.contact1/*Nizamudheen*/
{
    width:150px;
    height:150px;
    text-align:center;
    float:left;
    background-color:Gray;
 border-style:solid;
border-width:medium;
 letter-spacing:normal;
 line-height:0.8cm;
 
 
}
.contact2/*Suhath*/
{
    width:150px;
    height:150px;
    text-align:center;
    float:left;
    background-color:Silver;
     border-style:solid;
    border-width:medium;
    line-height:0.8cm;
   
}
.contact3
{
    width:150px;
    height:150px;
    text-align:center;
    float:left;
    background-color:Gray;
     border-style:solid;
    border-width:medium;
    line-height:0.8cm;
   
}
.contact4
{
    width:150px;
    height:150px;
    text-align:center;
    float:left;
    background-color:Silver;
     border-style:solid;
    border-width:medium;
    line-height:0.8cm;
   
}
.contact5
{
    width:150px;
    height:150px;
    text-align:center;
    float:left;
    background-color:Gray;
     border-style:solid;
    border-width:medium;
    line-height:0.8cm;
   
}
.contact6
{
    width:150px;
    height:150px;
    text-align:center;
    float:left;
    background-color:Silver;
     border-style:solid;
    border-width:medium;
    line-height:0.8cm;
    
}
.contact7
{
    width:150px;
    height:150px;
    text-align:center;
    float:left;
    background-color:Silver;
     border-style:solid;
    border-width:medium;
    line-height:0.8cm;
    
}
.contact8
{
    width:150px;
    height:150px;
    text-align:center;
    float:left;
    background-color:Gray;
     border-style:solid;
    border-width:medium;
    line-height:0.8cm;
    
}
.contact9
{
    width:150px;
    height:150px;
    text-align:center;
    float:left;
    background-color:Silver;
     border-style:solid;
    border-width:medium;
    line-height:0.8cm;
   
    
}
.contact10
{
    width:150px;
    height:150px;
    text-align:center;
    float:left;
    background-color:Gray;
     border-style:solid;
    border-width:medium;
    letter-spacing:normal;
    line-height:0.8cm;
}

Help me in this topic.