*{
    margin: 0;
    padding: 0;
}

body{
    height:800px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

button{
    width: 100px;
    height: 100px;
}

img{
    width: 100%;
    height: 100%;
}