@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;800&display=swap');
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}
.wall1{
    height: 100vh;
    width: 100%;
    background-image:url(wall1.jpeg);
    background-position: center;
    background-size: cover;
    background-attachment: fixed;
    display: table;
}
.wall2{
    height: 100vh;
    width: 100%;
    background-image:url(wall2.jpeg);
    background-position: center;
    background-size: cover;
    background-attachment: fixed;
    display: table;
}
.wall3{
    height: 100vh;
    width: 100%;
    background-image:url(wall3.jpeg);
    background-position: center;
    background-size: cover;
    background-attachment: fixed;
    display: table;
}
h1{
    text-align: center;
    vertical-align:middle;
    font-size: 40px;
    color: white;
    display: table-cell;
}