Menu Style List

{
  "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/row-formatting.schema.json",
  "hideSelection": true,
  "hideColumnHeader": true,
  "groupProps": {
    "headerFormatter": {
      "elmType": "div",
      "attributes": {
        "class": "ms-bgColor-communicationTint20"
      },
      "style": {
        "position": "absolute",
        "left": "-36px",
        "right": "0px",
        "top": "0px",
        "bottom": "0px",
        "font-size": "16px",
        "font-weight": "400",
        "outline": "0px",
        "white-space": "nowrap",
        "text-overflow": "ellipsis",
        "width": "100%",
        "padding-right": "30px"
      },
      "children": [
        {
          "elmType": "div",
          "style": {
            "padding": "10px",
            "display": "flex",
            "align-items": "center",
            "justify-items": "center"
          },
          "children": [
            {
              "elmType": "span",
              "style": {
                "font-size": "20px",
                "padding-left": "5px",
                "padding-right": "15px"
              },
              "attributes": {
                "iconName": "=if(@group.fieldData.displayValue == 'Appetizers', 'EatDrink', if(@group.fieldData.displayValue == 'Drinks', 'CoffeeScript', if(@group.fieldData.displayValue == 'Desserts', 'Cake', if(@group.fieldData.displayValue == 'Main Courses', 'Chopsticks', ''))))"
              }
            },
            {
              "elmType": "span",
              "style": {
                "font-size": "18px",
                "font-weight": "600"
              },
              "txtContent": "@group.fieldData.displayValue"
            }
          ]
        }
      ]
    }
  },
  "rowFormatter": {
    "elmType": "div",
    "style": {
      "width": "100%",
      "display": "flex",
      "margin": "5px 0px 5px 0px",
      "padding": "5px 20px 5px 20px",
      "box-shadow": "none",
      "align-items": "center",
      "justify-content": "space-between"
    },
    "children": [
      {
        "elmType": "span",
        "txtContent": "[$Title]",
        "style": {
          "font-size": "14px",
          "font-weight": "600",
          "color": "#333",
          "text-align": "left",
          "white-space": "nowrap",
          "display": "inline-block"
        }
      },
      {
        "elmType": "span",
        "attributes": {
          "class": "ms-bgColor-white"
        },
        "style": {
          "flex": "1",
          "border-bottom": "2px dotted #333",
          "margin-left": "10px",
          "margin-right": "10px",
          "margin-top": "10px",
          "display": "inline-block",
          "height": "1px"
        }
      },
      {
        "elmType": "span",
        "txtContent": "='$' + [$Price]",
        "style": {
          "font-size": "14px",
          "font-weight": "600",
          "text-align": "right",
          "white-space": "nowrap",
          "display": "inline-block"
        }
      }
    ]
  }
}