HTML and CSS Webpage Design

Im designing a website and want to use a css background-image that will display on each page and fill the background with the single image. I have a project folder with all pages and an images folder as well as a css folder. I cannot seem to link to the image I want with the code Im using. Ive been trying the following code snipet.

body{

background-image: images/burninglogs.jpg; background-size:cover

}

But it will not link to my picture I have saved. I have also tried

background-image: url("images/burninglogs.jpg"); I have had no luck from either way.

Any help or suggestions would be welcome.