.container2 {
    width: 600px;
    /*margin: 100px auto;*/
    padding-right: 15px;
    padding-left: 15px;
    margin-right: auto;
    margin-left: auto;
}

.progressbar {
    counter-reset: step;

}

    .progressbar li {
        list-style-type: none;
        width: 20%;
        float: left;
        font-size: 12px;
        position: relative;
        text-align: center;
        text-transform: uppercase;
        color: #7d7d7d;
        z-index:2;
    }

        .progressbar li:before {
            width: 30px;
            height: 30px;
            content: counter(step);
            counter-increment: step;
            line-height: 30px;
            border: 2px solid #7d7d7d;
            display: block;
            text-align: center;
            margin: 0 auto 10px auto;
            border-radius: 50%;
            background-color: white;

        }

        .progressbar li:after {
            width: 100%;
            height: 2px;
            content: '';
            position: absolute;
            background-color: #7d7d7d;
            top: 15px;
            left: -50%;
            z-index: 1;
        }

        .progressbar li:first-child:after {
            content: none;

        }

        .progressbar li.active {
            z-index: 3;
            color: green;
        }

            .progressbar li.active:before {
                border-color: #55b776;
            }

            .progressbar li.active + li:after {
                background-color: #55b776;
            }