.back { border:3px solid blue;
        padding:10px;
        background:#F5F0F0;
      } 
      
.main { border:3px solid blue;
        background:#F5F0F0;
        z-index:1;
        left:250px;
        width:930px;
        height:4300px;
      }
      
.sub { border:0px;
       padding-top:4%;
       padding-right:20%;
       padding-left:20%;
       z-index:2;
       left:250px;
       width:550px;
       height:1000px;
       text-align:left
       }
       
.bbs { border:3px solid blue;
        background:#F5F0F0;
        z-index:1;
        left:250px;
        width:930px;
        height:1800px;
      }
h1{ text-align:center; }

.red { color:#FF0000; }

.little { font-size:10pt; }

.center { text-align:center; }