.daohang a#index{font-weight:bold;text-decoration:none;background-repeat:no-repeat;text-align:center;color:#f00;}
.blue .daohang a#index{background-color:#3592e2}
.green .daohang a#index{background-color:#42b712}
.orange .daohang a#index{}
.red .daohang a#index{}