table.chat_b { border: 1px solid #dddddd; }

td.chat_h { background-color: #0162C1;  font-family: "arial", "sans-serif"; font-size: 14px; font-weight: bold; text-align: center; color: #ffffff; }
td.chat_t { font-family: "arial", "sans-serif"; font-size: 12px; font-weight: normal; text-align: }