html {
    height: 100%;
}

body {
    font-family: 'Georgia', serif;
    background-color: #f5f5f5; 
    min-height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin: 25px;
}


img {
    display: block;
    border: 25px white solid;
    margin-bottom: 50px;
    max-width: 500px;
    max-height: 500px;
}

@media (max-width: 768px) {
body {
 align-items:flex-start;
}
}