text: function numbers(num){
      console.log('<ul>');
      for (let i = 1; i <= num; i++) {
          if (i % 2 == 0){
              console.log("   <li><span style='color:blue'>"+i+"</span></li>")
          }else{
              console.log("   <li><span style='color:green'>"+i+"</span></li>")
          }
      }
      console.log('<ul>');
  }