CSS for test

.eqn {
    color: gray;
    border-style: none none solid none;
    border-width: 0px 0px 1px 1px;
    /*padding: 0em 1em 0em 1em;*/
}

.inline:before {
    content: "$\0020";
    color: inherit;
}

.inline:after {
    content: "\0020$";
    color: inherit;
}

.display:before {
    content: "$$";
    color: inherit;
}

.display:after {
    content: " $$";
    color: inherit;
}