/* common elements */

.fl { float: left;         }
.fr { float: right;        }
.fn { float: none;         }
.tl { text-align: left;    }
.tr { text-align: right;   }
.tc { text-align: center;  }
.bn { border: none;        }
.nw { white-space: nowrap; }
.db { display: block;      }
.dn { display: none;       }
.pr { position: relative;  }
.pa { position: absolute;  }
.ps { position: static;    }