how to make a linear gradient from bottom to top code example

Example 1: html css background linear-gradient

background: linear-gradient(#333, #333 50%, #eee 100%);
\\code for a basic gradient background
   #grad {
  background-image: linear-gradient(red, yellow);
}

Example 2: double color background css

background: linear-gradient(<angle>, color1 color1-stop-at, color2 color2-start-at);