My code won't run

// quiz begins, no answers correct yet
var correct = 0;

// asks questions
var answer1 = prompt("What is the capital of Spain?");
if (answer1.toUpperCase() === "MADRID") {
  correct += 1;
}
var answer2 = prompt("What colour is the sky?");
if (answer2.toUpperCase() === "BLUE") {
  correct += 1;
}
var answer3 = prompt("Who is the president of the United States?");
if (answer3.toUpperCase() === "DONALD TRUMP") {
  correct += 1;    
}
var answer4 = prompt("What sound does a dog make?");
if (answer4.toUpperCase() === "WOOF") {
  correct += 1;
}
var answer5 = prompt("Is this quiz good? Yes or no?");
if (answer5.toUpperCase() === "YES") {
  correct += 1;
}

// output results
document.write("<p>You got " + correct + " out of 5 questions correct.</p>");

// output rank
if (correct === 5) {
    document.write("<p><strong>You earned a gold crown! Congratulations!</strong></p>");
}
if (correct >= 3) {
    document.write("<p><strong>You earned a silver crown.</strong></p>");
}
if (correct >= 1 {
    document.write("<p><strong>You earned a bronze crown.Meh.</strong></p>");    
}