.grid_1,
.grid_2,
.grid_3,
.grid_4,
.grid_5,
.grid_6,
.grid_7,
.grid_8,
.grid_9,
.grid_10,
.grid_11,
.grid_12 {
    display: inline;
    float: left;
    position: relative;
    margin: 0 10px
}
.alpha {
    margin-left: 0;
}
.omega {
    margin-right: 0;
}
.grid_1 {
    width: 60px;
}
.grid_2 {
    width: 140px;
}
.grid_3 {
    width: 220px;
}
.grid_4 {
    width: 300px;
}
.grid_5 {
    width: 380px;
}
.grid_6 {
    width: 460px;
}
.grid_7 {
    width: 540px;
}
.grid_8 {
    width: 620px;
}
.grid_9 {
    width: 700px;
}
.grid_10 {
    width: 780px;
}
.grid_11 {
    width: 860px;
}
.grid_12 {
    width: 940px;
}