Constant railroad::DEFAULT_CSS

pub const DEFAULT_CSS: &'static str = r#"
    svg.railroad {
        background-color: hsl(30, 20%, 95%);
        background-size: 15px 15px;
        background-image: linear-gradient(to right, rgba(30, 30, 30, .05) 1px, transparent 1px),
                          linear-gradient(to bottom, rgba(30, 30, 30, .05) 1px, transparent 1px);
    }

    svg.railroad path {
        stroke-width: 3px;
        stroke: black;
        fill: transparent;
    }

    svg.railroad .debug {
        stroke-width: 1px;
        stroke: red;
    }

    svg.railroad text {
        font: 14px monospace;
        text-anchor: middle;
    }

    svg.railroad .nonterminal text {
        font-weight: bold;
    }

    svg.railroad text.comment {
        font: italic 12px monospace;
    }

    svg.railroad rect {
        stroke-width: 3px;
        stroke: black;
        fill:hsl(-290, 70%, 90%);
    }

    svg.railroad g.labeledbox > rect {
        stroke-width: 1px;
        stroke: grey;
        stroke-dasharray: 5px;
        fill:rgba(90, 90, 150, .1);
    }"#;