.welcome-hero-aboutus {
    position: relative;
    background:url(../images/brand/about-bg.png)no-repeat;
    background-position: center;
    background-size: cover;
    z-index: 1;
}

.welcome-hero-aboutus:before {
    position: absolute;
    content: "";
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(42, 45, 84, 0.226);
    z-index: -1;
}