hugo-theme-zzo/assets/sass/components/_math.scss

.MathJax {
    overflow-x: auto;
    overflow-y: hidden;
    box-sizing: border-box;
}

code.has-jax {
    -webkit-font-smoothing: antialiased;
    background: inherit !important;
    border: none !important;
    font-size: 100%;
}