Header

Main

.main {
    float: left;
    width: 100%;
}
.main-wrap {
    margin-left: 430px;
}

Sub

.sub {
    float: left;
    width: 190px;
    margin-left: -100%;
}

Extra

.extra {
    float: left;
    width: 230px;
    margin-left: -100%;
    position: relative;
    left: 190px;
}

Footer