a {
    margin-top: 1px;
    margin-right: 2px;
    margin-bottom: 3px;
    margin-left: 4px;
}
b {
    margin-top: 2px;
    margin-right: 1px;
    margin-bottom: 1px;
    margin-left: 1px;
}
c {
    margin-top: 2px;
    margin-right: 2px;
    margin-bottom: 1px;
    margin-left: 1px;
}
d {
    margin-top: 1px;
    margin-right: 2px;
    margin-bottom: 1px;
    margin-left: 2px;
}
e {
    margin: 5px;
    margin-top: 1px;
    margin-right: 2px;
    margin-bottom: 3px;
    margin-left: 4px;
}