.back {
    color: white;
    background: darkslategray;
    text-decoration: none;
    font-family: sans-serif;
    padding: 5px;
    margin: 10px;
}

body {
    background-color: lightgray;
}

.example {
    background: white;
    border: 1px solid gray;
    font-family: sans-serif;
    padding: 10px;
    margin: 5px;
}

/* h2:has(+ .example) {
    color: red;
    border: gray solid 1px;
    width: 30%;
    padding: 3px;
    margin-left: 10px;
    margin-bottom: -20px;
    z-index: 2;
} */