дробная единица в сетке

/* giving container class grid will not work we have to give rows and columns 
 1fr means taking 1 part of available space.*/
.container{
display:grid;
grid-template-rows: 150px 150px;
grid-template-columns:1fr 1fr 1fr ; /* container contain 6 items inside it*/
/* in short we can also use repeat function */
grid-template-columns:repeat(3 ,1fr);
grid-template-columns:50% repeat(2,1fr); /*it means first column will take 50% and other 2 50% */
}
Shirshak kandel