body{
    margin: 0;
}
.w-layout-blockcontainer 
{ 
    max-width: 940px; 
    margin-left: auto;
    margin-right: auto;
    display: block;
    }

.container {
height: 100vh;
}
.div-block {
height: 100vh;
justify-content: center;
align-items: center;
display: flex;
flex-direction: column;
}
.div-block-2 { 
    width: 75%;
    height: 75%;
    max-width:500px;
    max-height:500px;
    min-width:500px;
    background-image: url('images/Web-page.jpg');
    background-position: 50%; 
    background-size: cover;
    align-items: center;
}