.MainFrame
{
background: #333333;
border: 1px solid black;/* */
width: 980px;
margin: 20px auto 20px; 
}

.content
{
background: silver;
width: 940;
margin: 10px 20px 20px 20px;
border: none;
overflow: hidden;
padding: 30px;
}
#logo
{
color: black;
border: none;
margin: 10px 10px;
}
#pstt
{
color: White;
text-align: center;
font-family: Arial, Helvetica, Verdana, sans-serif;
font-size: 34px;

}
.bachmac
{
margin-left: -20px;
margin-bottom: -20px;
}