switch/addons/umeditor/assets/dialogs/formula/formula.css

.edui-popup-formula .edui-formula-wrapper {
    padding: 15px;
}
.edui-popup-formula .edui-formula-wrapper .edui-tab-nav{
    height: auto;
    *height: 31px;
}
.edui-popup-formula .edui-formula-wrapper .edui-tab-text {
    font-size: 12px;
}
.edui-popup-formula .edui-formula-wrapper .edui-formula-clearboth {
    clear: both;
    width: 0;
    height: 0;
}
.edui-popup-formula .edui-formula-wrapper .edui-tab-pane ul {
    margin: 0px;
    padding: 0px;
}
.edui-popup-formula .edui-formula-wrapper .edui-tab-content {
    padding: 5px 0px 0px 0px;
}
.edui-popup-formula .edui-formula-wrapper .edui-tab-pane .edui-formula-latex-item {
    display: block;
    float: left;
    margin: 0px 3px 3px 0px;
    width: 30px;
    height: 30px;
    border:1px solid #cccccc;
    background-image: url("images/formula.png");
    cursor: pointer;
}