.box {
    display: flex;
    flex-wrap: wrap;
}

.item {
    width: 300px;
    border: solid 1px;
    border-radius: 10px;
    margin: 0.5em;
    padding: 0.5em;
    /* flex-grow: 0; */
}

blockquote {
    margin-left: 2rem;
    border-left: 4px solid rgb(204, 204, 204);
    padding-left: 1rem;
}



ol.references li:target {
    background-color: lightblue;
}

img {
    max-width: 80%;
}


pre {
    background-color: lightgray;
}