.roadmap {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.milestone {
    width: 80%;
    background-color: #3498db;
    color: #ffffff;
    padding: 15px;
    margin: 10px 0;
    border-radius: 5px;
}

.completed {
    background-color: lightgreen;
    color: #ffffff;
}