body { background-color:salmon; }
h1 { text-align: center; color: green; }
button {
    background-color:lightblue;
    color:navy;
    border: solid black 2px;
    border-radius: 15px;
    width: 30%;
    padding: 10px 20px;
    text-align: center;
}
img {
    display: inline;
    margin-left: center;
    margin-right: center;
    width: 15%; 
}