How is it that this code:
<div style="background-color: #f8f8f8;"><span style="margin-left: 0px !important;"><code style="color: gray;">#include <stdbool.h> </code></span></div>
<div style="background-color: #fff;"><span style="margin-left: 0px !important;"><code style="color: gray;">#include <stdio.h> </code></span></div>
<div style="background-color: #f8f8f8;"><span style="margin-left: 0px !important;"><code style="color: gray;">#include <stdlib.h> </code></span></div>
Looks like this when in edit mode:

but looks like this when in presentation mode:

?