.landing-page-img {
    width: 100%;
    height: 100%;
}

body {
    margin: 0;
    padding: 0;
}

.landing-page-div {
    background: linear-gradient(0deg, rgba(25, 90, 167, 0.70) 0%, rgba(25, 90, 167, 0.70) 100%), url(<path-to-image>) lightgray 50% / cover no-repeat;
    /*filter: blur(2.8499999046325684px);*/
}