.math-tex{animation:pulsate .8s linear infinite;background:#ddd;color:#ddd;height:1.2em;max-width:10em;opacity:.2;overflow:hidden;vertical-align:middle}@keyframes pulsate{50%{opacity:.8}}.math-tex.ok{animation:none;background:transparent;color:inherit;height:auto;max-width:none;opacity:1;vertical-align:inherit;overflow:inherit}