:root{
   --primary-color:#ffffff;
   --secondary-color:#121212;
   --tertiary-color:#f3f3f3;
   --box-shadow-main: #00000066;
   --box-shadow-hover: #10a3ff99;
 }
 /*:root{
   --primary-color:#121212;
   --secondary-color:#efefef;
   --tertiary-color:#292929;
   --box-shadow-main: #f3f3f36c;
   --box-shadow-hover: #10a3ff99;
 }*/
 
 html{
   margin: 0;
   padding: 0;
 }
 body{
   background: var(--tertiary-color);
   font-family: Roboto,Arial;
   margin: 104px 20x 0 20px;
 }
 div{
   margin: 0;
   padding: 0;
 }