Which css attribute would change an element's font color to blue

The "color" atribute

Explanation:

The color attribute of CSS defines the color value of an element with its text content and decorations (styles). It also sets the currentcolor's value, where an indirect value from another property can be used, and defaults to the colors of other properties (while not defined), such as the border-color property.

body {

     color: black;

}

h1 {

  color: red;

}

h2 {

color: #00ff00;

}

which functions return a valid value without any arguments?

(-blank- and -blank- return a valid value without any arguments.)

1st -blank-

today

sqrt

count

2nd -blank-

round

now

sqrt