*{
    margin: 0;
    padding: 0;
    font-family: 'sans-serif';
    box-sizing: border-box;
}
body{
    background-color: aqua;
    height: 300px;
    width: 300px;
}
img{
    width: 100%;
    height: 100%;
}
h1{
    color: brown;
    align-items: center;
    justify-content: center;
}
button{
    color: red;
    font-size: 20px;
}