body 
{
border:  none;

margin: 0 10%;
  
padding: 0;
  
background-image:
url(https://www.narskuttelu.fi/tuotekuvat/420x240/narskuttelu-LOGO-neljo2.png),
url(https://www.dentalxylitol.com/tuotekuvat/420x240/dentalxylitol-xylitol-pastilles-400x400-2.png); 
  background-position:
    top left, /* this positions the first image */
   top right; /* this positions the second image */
  background-repeat:
    repeat-y, repeat-y; /* this applies to both images */
}