@media all and (min-width 768px) code example
Example 1: media query min and max
/* Max-width */
@media only screen and (max-width: 600px) {...}
/* Min-width */
@media only screen and (min-width: 600px) {...}
/* Combining media query expressions */
@media only screen and (max-width: 600px) and (min-width: 400px) {...}
Example 2: media query css for all devices
@media (min-width: 600px) and (max-width: 800px) {
/* your css code here */
/* html { background: red; } */
}