Now it looks somewhat better, but still not exactly how I'd like it to be.
.chat_line {
font-family: "sansseriff";
}
.chat_line .nick {
font-size: 24px;
line-height: 24px;
color: #white;
text-shadow:-2px 0 #000000,
0 2px #000000,
2px 0 #000000,
0 -2px #000000;
}
.chat_line .message {
font-weight: bold;
font-size: 24px;
line-height: 24px;
color: #white;
text-shadow:-2px 0 #000000,
0 2px #000000,
2px 0 #000000,
0 -2px #000000;
}