.about-header {
    background-image: url(../img/sign-bg.jpg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    height: 300px;
    position: relative;
    
}

.about-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(1, 31, 75, 0.85);
}

.about-header .container-fluid {
    height: 100%;
    position: relative;
    z-index: 2;
    margin-right: 30px;
}

/* Style for About Us h1 */
.about-header h1 {
    color: #ffffff;
    font-size: 2.50rem;
    font-weight: bold;
    letter-spacing: 2px;
    margin: 0;
    text-align: left;
    flex: 0 0 auto;
    margin-left: 30px;
}