Feature Request: Add vertical spacing option between plot and rangeslider

Hi Plotly team ,

I'm working with rangeslider in a dual-axis layout (xaxis + xaxis2, yaxis2), and I’d like to request a feature that allows more control over the vertical spacing between the plot area and the rangeslider.

In the current setup, the rangeslider always appears directly below the main plot and sometimes the labels are inside the rangeslider.

The definition of the layout is:

function staticLayout(): object {
  
  return {
    margin: {l: 70, r: 20, t: 10, b: 20},
    showlegend: true,
    legend: {
      orientation: 'h',
      x: 0,
      y: 1.02,
      yanchor: 'bottom',
    },
    xaxis: {
      domain: [0.0, 1.0],
      anchor: 'y',     
      side: 'bottom',    
      title: {
        text: 'Time (s)',
        standoff: 15
      },
      automargin: true,
      rangeslider: {
        visible: true,
        thickness: 0.07,
        bgcolor: "#f5f5f5",
        bordercolor: "black",
        borderwidth: 1,
      },
      showticklabels: false,
      showgrid: false,
      zeroline: false,
      fixedrange: true,
    },
    yaxis: {
      visible: false,
      showticklabels: false,
      showgrid: false,
      zeroline: false,
      showline: false,
      overlaying: 'y2',
    },
    xaxis2: {
      anchor: 'y2',      
      side: 'bottom',    
      // type: 'log',
      ticklabelposition: 'outside',
    },
    yaxis2: {
      anchor: 'x2',
      zeroline: false,
      showticklabels: true,
      ticklabelposition: 'outside',
    }
  };
}

How can I fix the spacing?

Start by reproducing the supplied dual-axis layout with xaxis.rangeslider and the screenshot’s label-overlap behavior. Trace where the plot-to-rangeslider spacing is determined, then define the requested spacing option and verify that the example separates the plot and rangeslider without placing labels inside it.