h1, h2, p {
    border: 2px solid black;
    padding: 5px;
}
h1 {
    background-color: rgb(230,250,250);
}
h2 {
    background-color: rgb(250,210,250);
}
p {
    background-color: rgb(250,250,230);
}
strong {
    display: block;
    background-color: rgb(230,250,230);
    padding: 3px;
    border: 1px solid gray;
}