.tip {
margin-top: 0.5em;
margin-bottom: 0.5em;
font-size: 0.9em;
border-left: 4px solid #AAAAAA;
padding: 0.5em 1em;
}
.tip-normal {
border-color: #667a99;
background: #f0f6ff;
}
.tip-warning {
border-color: #ffdf44;
background: #fffae0;
}
.tip-error {
border-color: #ff8989;
background: #ffeded;
}