这段CSS样式代码什么意思?

BODY {
FONT-SIZE: 12px; FONT-FAMILY: "宋体"; BACKGROUND-COLOR: #004e82
}
TD {
FONT-SIZE: 12px; COLOR: #0d214f; LINE-HEIGHT: 18px; FONT-FAMILY: "宋体"; TEXT-DECORATION: none
}
A:link {
COLOR: #0d214f; FONT-FAMILY: "宋体"; TEXT-DECORATION: none
}
A:visited {
COLOR: #0d214f; FONT-FAMILY: "宋体"; TEXT-DECORATION: none
}
A:hover {
RIGHT: 0px; LEFT: 1px; COLOR: #fd4801; FONT-FAMILY: "宋体"; POSITION: relative; TOP: 1px; TEXT-DECORATION: underline
}
.dot {
BACKGROUND-POSITION: left bottom; BACKGROUND-ATTACHMENT: fixed; BACKGROUND-REPEAT: repeat-x
}
.class1 {
BACKGROUND-COLOR: #a6cefd
}
.form {
BORDER-RIGHT: #737373 1px solid; BORDER-TOP: #737373 1px solid; FONT-SIZE: 12px; BORDER-LEFT: #737373 1px solid; LINE-HEIGHT: 22px; BORDER-BOTTOM: #737373 1px solid; BACKGROUND-COLOR: #ffffff
}
.red:link {
COLOR: #cc0000; FONT-FAMIL