.milestones{
    margin-left:35%;
    font-size:150%;
    font-weight:bold;
    text-decoration: underline;
}

.banner {
    /* opacity:0.9;
    background-color: #000000; */
    /* filter: opacity(0.9) drop-shadow(0 0 0 rgb(0, 0, 0));  */
    /*filter: brightness(30%);*/
    position: relative;
    width: 100%;
    height: 150%;
    min-height: 430px;
    background-size: cover;
    color: #fff;
    text-align: center;
    padding: 6% 15px;
  }
  
  .big-text {
    position: absolute;
    color:white;
    align-items: center;
    font-size: 600%;
    font-weight:500;
    margin-top:-16%;
    margin-left: 35%;
  }