.tab {
    display: none;
}

.step {
    height: 15px;
    width: 15px;
    margin: 0 2px;
    background-color: #bbbbbb;
    border: none;
    border-radius: 50%;
    display: inline-block;
    opacity: 0.5;
}

.step.active {
    background-color: #727272;
    opacity: 1;
}

.step.finish {
    background-color: #d0d0d0;
}