編譯出來是.error, .seriousError {
border: 1px #f00;
background-color: #fdd; }
.error.intrusion, .intrusion.seriousError {
background-image: url("/image/hacked.png"); }
.seriousError {
border-width: 3px; }不是.error.intrusion, .seriousError.intrusion {
background-image: url("/image/hacked.png"); }
