* {
    box-sizing: border-box;
}
body {
    margin: 0;
}
img {
   width: 100%;
   height: 100vh;
   object-fit: cover; /* Аналог background-size: cover */
}
section {
    width:100vw;
    height:250px;
    display:flex;
    align-items:center;
    justify-content:center;
}
section img {
    position:absolute;
}
section h1 {
    font-size:500px;
    mix-blend-mode:overlay;
}