how to change the font weight in css code example

Example 1: font-weight css

/* Valeurs avec un mot-clé */
font-weight: normal;
font-weight: bold;

/* Valeurs relatives à l'élément parent */
font-weight: lighter;
font-weight: bolder;

/* Valeurs numériques */
font-weight: 1;
font-weight: 100;
font-weight: 100.6;
font-weight: 123;
font-weight: 200;
font-weight: 300;
font-weight: 321;
font-weight: 400;
font-weight: 500;
font-weight: 600;
font-weight: 700;
font-weight: 800;
font-weight: 900;
font-weight: 1000;

/* Valeurs globales */
font-weight: inherit;
font-weight: initial;
font-weight: unset;

Example 2: css bold text

we can set text bold using css property named 'font-weight'
Syntax:
selector{
  font-weight: bold;
}

Example 3: css bold weight

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

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

Example 4: 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;

Example 5: Font weight css

/*

Thin, Hairline				100
Extra Light, Ultra Light	200
Light						300
Normal, Regular				400
Medium						500
Semi Bold, 					600
Bold						700
Extra Bold, Ultra Bold		800
Black, Heavy				900

*/

.myclass {
 font-weight: normal; /* 400 */
}

.myOtherClass {
 font-weight: 700;  /* Bold */
}

/* You can Use this List to see all the different Types */
/* Make sure you have the Font Files Downloaded and Embedded */