app/assets/stylesheets/editor-theme.scss
body {
border:0;
font-size:15px;
padding: 17px 10px 40px 15px;
line-height:1.35em;
margin:0;
font-family: Montserrat,"Helvetica Neue",Helvetica,Arial,sans-serif !important;
color: #444;
border-color: #ddd;
border-style: solid;
border-width: 0px 0px 2px 1px;
}