function getNumbers(){

                                //Pull numbers and make them integers.
                                let num1 = parseInt(document.getElementById("num1").value);
                                let num2 = parseInt(document.getElementById("num2").value);
                                let end = parseInt(document.getElementById("end").value);
                            
                                //Verify numbers are integers.
                                //Verify first and second numbers aren't larger than 10.
                                //Verify ending value isn't greater than 1000.
                                if(!Number.isInteger(num1) || !Number.isInteger(num2) || !Number.isInteger(end)){
                                    alert("Only enter numbers!");
                                    return;
                                } else if (num1 > 10 || num2 > 10){
                                    alert("Only enter values less then 10.");
                                    return;
                                } else if (end > 1000){
                                    alert("Ending number must be below 1000.");
                                    return;
                                }
                            
                                //Generate an array and save to 'numbers'.
                                let numbers = generateNumbers(1, end);
                            
                                //Display our array.
                                displayValues(numbers);
                            
                                //Create an array, start at 1 end at end number.
                                function generateNumbers(start, end){
                                    let numbers = [];
                                    for (let i = start; i <= end; i++) {
                                        numbers.push(i);
                                    }
                                    return numbers;
                                }
                            
                                //Set results div inner html to nothing.
                                //for each element verify multiples, assign classes and innerHTML.
                                //appendChild div with newly created col.
                                function displayValues(numbers){
                                    results.innerHTML = "";
                                    numbers.forEach(element => {
                                        let div = document.createElement("div");
                                        div.classList.add("col","border","border-dark", "p-2");
                                        if(element % num1 === 0 && element % num2 === 0){
                                            div.classList.add("fizzbuzz", "bg-warning");
                                            div.innerHTML = ("FizzBuzz");
                                            
                                        } else if (element % num1 === 0){
                                            div.classList.add("fizz", "bg-secondary");
                                            div.innerHTML = ("Fizz");
                                        } else if (element % num2 === 0){
                                            div.classList.add("buzz", "bg-dark");
                                            div.innerHTML = ("Buzz");
                                        } else {
                                            div.innerHTML = element;
                                            div.classList.add("bg-light");
                                        }
                                        document.getElementById("results").appendChild(div);
                                    });
                                }
                            }