blockquote {
    background-color: gainsboro;
    margin: 1pt;
    padding: 1pt;
    padding-left: 5%;
}

body {
    margin: 0 auto;
    padding: 2% 2%;
    max-width: 1300px;
}

img {
    max-width: 80%;
    max-height: auto;
}

div.MathJaxBox {
    width: 85%;
    overflow-x: auto;
    border: 1px solid gray;
    padding: 1em;
    margin: 1em;
}

@media (max-width: 768px) {
    body {
        padding: 3% 3%;
    }
}

@media (max-width: 480px) {
    body {
        padding: 2% 2%;
    }
}