.content{color:Black;font-size:14px;font-style:normal;font-family:Times New Roman;}
.menu{color:Green;font-size:16px;text-decoration:none;font-family:Arial;}
.menu:hover{text-decoration:underline;}
.b1{background-color:#aaaaaa;}
.b2{background-color:#999999;}
.b3{background-color:#676767;}
.b4{background-color:#404040;}
.b5{background-color:#898989;}