#banner {
background-color:yellow;
text-align: center;
}
header {
background-image: url(banner.jpg);
background-repeat:no-repeat; 
color: lightblue;
background-size: cover; 

}
#banner h1 {
color: red;
}
#banner h2.author {
color: red;
}
#banner p.homepage {
background-color:blue;
}