body     {background-image:url(e/usi3.gif);}
a:link   {color:blue;}
a:active {color:red;}
a:visited{color:green;}
h1       { font-size:20pt; }
h2       { font-size:15pt; }
h3       {font-size:60;}
.a1   {margin-left: 30px; margin-right: 30px; margin-top: 20px; margin-bottom: 20px;
       padding-left: 20px; padding-right: 20px; padding-top: 20px; padding-bottom: 20px; 
       background-image:url(e/usi6.gif);}
.a2    {margin-left: 30px; margin-right: 30px; margin-top: 20px; margin-bottom: 20px;
       padding-left: 20px; padding-right: 20px; padding-top: 20px; padding-bottom: 20px; 
       background-image:url(e/usi7.gif);}
.a3   {margin-left: 30px; margin-right: 30px; margin-top: 20px; margin-bottom: 20px;
       padding-left: 20px; padding-right: 20px; padding-top: 20px; padding-bottom: 20px; 
       background-image:url(e/usi14.gif);}
.a4   {margin-left: 100px; margin-right: 100px; margin-top: 20px; margin-bottom: 20px;
       padding-left: 20px; padding-right: 20px; padding-top: 20px; padding-bottom: 20px; 
       background-image:url(e/usi4.gif);}
.a5   {margin-left: 30px; margin-right: 30px; margin-top: 20px; margin-bottom: 20px;
       padding-left: 5px; padding-right: 5px; padding-top: 5px; padding-bottom: 5px; 
       background-image:url(e/usi6.gif);}