what is text weight in css code example

Example 1: css bold weight

/* key word "lighter", "normal", "bold", or "bolder" */ 
.normal {
  font-weight: normal;
}

/* number between 100 and 900 */
.heavy {
  font-weight: 900;
}

Example 2: font weight css

/* Keyword values */
font-weight: normal;
font-weight: bold;

/* Keyword values relative to the parent */
font-weight: lighter;
font-weight: bolder;

/* Numeric keyword values */
font-weight: 100;
font-weight: 200;
font-weight: 300;
font-weight: 400; // normal
font-weight: 500;
font-weight: 600;
font-weight: 700; // bold
font-weight: 800;
font-weight: 900;

/* Global values */
font-weight: inherit;
font-weight: initial;
font-weight: unset;