.CodeMirror .CodeMirror-scroll {
    /*min-height: 250px;*/
}

.CodeMirror pre {
    font-size: 13px !important;
    line-height: 15px !important;
}

/*use custom ico file*/
.md-custom-icon {
    background-position: center;
    background-repeat: no-repeat;
    background-size: 16px 16px;
    vertical-align: bottom;
}

/*loose options*/
    .md-custom-icon:hover {
        background-position: center !important;
        background-repeat: no-repeat !important;
        background-size: 16px 16px !important;
        vertical-align: bottom !important;
    }

.md-file {
    background-image: url('file.png');
}
    .md-file:hover {
        background-image: url('file.png') !important;
    }

.md-image {
    background-image: url('image.png');
}
    .md-image:hover {
        background-image: url('image.png') !important;
    }

.md-link {
    background-image: url('link.png');
}
    .md-link:hover {
        background-image: url('link.png') !important;
    }