.x-surface-canvas //If you use compass, instead of the line below you could use + border-radius($radius, $vertical-radius) border-radius: 3px .x-fieldset-default border: 1px solid $blurple .x-vertical-scroller background: $dark !important .x-css-shadow display: none .critical color: $red .warning color: $yellow .install-mask color: white background-color: $darker