top1.fxml

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.control.Button?>
<?import javafx.scene.control.ComboBox?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.image.Image?>
<?import javafx.scene.image.ImageView?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.Pane?>
<?import javafx.scene.shape.Line?>

<AnchorPane fx:id="top" prefHeight="845.0" prefWidth="600.0" style="-fx-background-color: black;" xmlns="http://javafx.com/javafx/8.0.121" xmlns:fx="http://javafx.com/fxml/1" fx:controller="hello.pages.topcontroller">
   <children>
      <Pane layoutX="-5.0" prefHeight="570.0" prefWidth="392.0" style="-fx-background-color: Black;" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
         <children>
            <Line endX="500.0" layoutX="101.0" layoutY="64.0" startX="-100.0" stroke="#00f2ff" />
            <Label layoutX="75.0" layoutY="14.0" prefHeight="42.0" prefWidth="246.0" style="-fx-text-fill: white; -fx-font-size: 20;" text="Chain Reaction" />
            <ImageView fitHeight="50.0" fitWidth="54.0" layoutX="14.0" layoutY="10.0" pickOnBounds="true" preserveRatio="true">
               <image>
                  <Image url="@../../../unnamed.jpeg" />
               </image>
            </ImageView>
            <Button fx:id="Undo" layoutX="381.0" layoutY="20.0" mnemonicParsing="false" onAction="#undo" style="-fx-background-color: Grey; -fx-text-fill: White;" text="Undo" />
            <ComboBox fx:id="options" layoutX="461.0" layoutY="20.0" onAction="#options1" prefHeight="31.0" prefWidth="117.0" promptText="Select" />
         </children>
      </Pane>
   </children>
</AnchorPane>