.presentation{
    background-image:
    linear-gradient(
        rgba(73, 116, 165, 0.596),
        rgba(0, 0, 0, 0.5)
      ),
      url("../img/applications/applicationsHeader.jpg");
    background-position: center;
    background-size: cover;
    height: 30rem;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    color: white;
}