body {
    margin-top: 0;
    margin-left: 0;
}

.padding-10 {
    padding: 10px;
}

.width-30 {
    width: 30%;
}

.width-40 {
    width: 40%;
}

.text-right {
    text-align: right;
}

.text-center {
    text-align: center;
}

.visibility {
    visibility: hidden;
}