ol.progtrckr li {
    display: inline-block;
    text-align: center;
    line-height: 3em;
    width: 14%;
}

ol.progtrckr li.progtrckr-done {
    color: black;
    border-bottom: 4px solid yellowgreen;
}
ol.progtrckr li.progtrckr-todo {
    color: silver; 
    border-bottom: 4px solid silver;
}

ol.progtrckr li:after {
    content: "\00a0\00a0";
}
ol.progtrckr li:before {
    position: relative;
    bottom: -2.5em;
    float: left;
    left: 50%;
    line-height: 1em;
}
ol.progtrckr li.progtrckr-done:before {
    content: "\2713";
    color: white;
    background-color: yellowgreen;
    height: 1.2em;
    width: 1.2em;
    line-height: 1.2em;
    border: none;
    border-radius: 1.2em;
}
ol.progtrckr li.progtrckr-todo:before {
    content: "\039F";
    color: silver;
    background-color: white;
    font-size: 1.5em;
    bottom: -1.6em;
}