/* Keyword values */
background-color: gainsboro;
background-color: lightcoral;

/* Hexadecimal value */
background-color: #0000ff;    /* blue opaque */
background-color: #00f;       /* blue opaque shorthand */
background-color: #0000ff00;  /* blue transparent */
background-color: #00f0;      /* blue transparent shorthand  */
background-color: #0000ffff;  /* blue opaque */
background-color: #00ff;      /* Fully opaque shorthand  */

/* RGB value */
background-color: rgb(0, 0, 255);        /* blue opaque */
background-color: rgba(0, 0, 255, 0.5);  /* 50% transparent */

/* HSL value */
background-color: hsl(67, 100%, 50%);         /* yellow opaque */
background-color: hsla(67, 100%, 50%, 0.75);  /* 75% transparent */

/* Special keyword values */
background-color: currentcolor;
background-color: transparent;

/* Global values */
background-color: inherit;
background-color: initial;
background-color: unset;