span[data-mce-math]{
    line-height: inherit;
}
mce-latex-loader,
.mce-preview-math {
    display: inline-block;
    position: relative;
    margin: 0 2px 0 2px;
    line-height: inherit;
    border-color: lightgray;
    border-width: 1px;
    border-style: dashed;
    padding: 1px 2px;
}
.mce-preview-math .mce-shim {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url(data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7);
}

.mce-preview-math > img.mce-latex-loader{
    vertical-align: middle;
}