/* reset base */
* {
    margin: 0;
    padding: 0;
    border: none;
    box-sizing: border-box;
}
html {
    overflow-y: scroll;
}
main {
    display:flex;
    flex-direction: column;
    margin:auto;
    justify-content: center;
    align-items: center;
}

main img{
    display: block;
    height:100vh;
    object-fit: cover;
    user-select: none;
}