/* main art font for all article text */
body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 20px;
}

/* 4-column layout */
#article {
    column-count: 4;
    column-gap: 25px;
    width: 100%;
    border: 3px solid #333;
    padding: 20px;
    box-sizing: border-box;
}

/* Paragraph spacing */
#article p {
    margin-bottom: 1em;
    line-height: 1.5em;
}

/* Google font History of CSS */
.history-title {
    font-family: 'Oswald', sans-serif;
    font-size: 2em;
    margin-bottom: 10px;
}

/* Google font Difficulty with Adoption */
.adoption-title {
    font-family: 'Roboto Slab', serif;
    font-size: 2em;
    margin-top: 20px;
    margin-bottom: 10px;
}

/* Source txt */
.source {
    font-weight: bold;
    margin-top: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.4);
}