.step {
    display: none;
}
.step-active {
    display: block;
}
.progressbar {
    display: flex;
    justify-content: space-between;
    counter-reset: step;
    margin-bottom: 20px;
}
.progressbar li {
    list-style-type: none;
    width: 100%;
    position: relative;
    text-align: center;
    font-weight: bold;
    color: gray;
}
.progressbar li::before {
    content: counter(step);
    counter-increment: step;
    width: 30px;
    height: 30px;
    line-height: 30px;
    border: 2px solid gray;
    display: block;
    text-align: center;
    margin: 0 auto 10px auto;
    border-radius: 50%;
    background-color: white;
}
.progressbar li::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background-color: gray;
    top: 15px;
    left: -50%;
    z-index: -1;
}
.progressbar li:first-child::after {
    content: none;
}
.progressbar li.active {
    color: #007bff;
}
.progressbar li.active::before {
    border-color: #007bff;
    background-color: #007bff;
    color: white;
}
.progressbar li.active + li::after {
    background-color: #007bff;
}