Foreign key does not appear in table structure in PHPMYADMIN

I am creating two tables called customer and item. For the customer table customerID is the primary key and for the item table itemID is the primary key. And I am creating another table which is myOrder. In myOrdertable customerID and itemID are a compound key. I defined both the columns as foreign keys as well. Once I finish creating the tables the compound key shows fine but cutomerID does not get displayed as a foreign key like in the screen capture. [![enter image description here][1]][1]

Below is the code I used.

CREATE DATABASE FK_TEST; 

USE FK_TEST;

CREATE TABLE Customer 
(
    customerID VARCHAR(10) NOT NULL, 
    name VARCHAR(25), 
    PRIMARY KEY(customerID)
);


CREATE TABLE ITEM
(
    itemID VARCHAR(10) NOT NULL, 
    itemName VARCHAR(10), 
    PRIMARY KEY(itemID)
);

CREATE TABLE myOrder 
( 
    customerID VARCHAR(10) NOT NULL,
    itemID VARCHAR(10) NOT NULL, 
    qty FLOAT(5,2),
    PRIMARY KEY(customerID,itemID),
    FOREIGN KEY(customerID) REFERENCES Customer(customerID), 
    FOREIGN KEY(itemID) REFERENCES ITEM(itemID)
);