#about::before {
    content: "";
    position: absolute;
    background: url('/aboutmain.jpg') no-repeat center center/cover;
    height: 642px;
    top: 0px;
    left: 0px;
    width: 100%;
    z-index: -1;
    opacity: 0.89;
}

#about {
    display: flex;
    flex-direction: column;
    padding: 3px 200px;
    height: 550px;
    justify-content: center;
    align-items: center;
}

#mainaboutus {
    margin-left: 8%;
}

@media only screen and (max-width:767px) {
    #mainaboutus img {
        height: 90%;
        width: 90%;
    }
}