All 4 burners will not ignite on the gas stove top

I just used 2 of the burners a couple of hours ago to cook dinner. I just went to reheat something and now none of the burners will ignite. There is no clicking sound on any of the burners now when they are turned on to ignite them. The burners can be lit with a match. I have no idea what is wrong and how to fix it.