CSS Colors

Color Formats:

color: red;                    /* Name */
color: #ff0000;                /* Hex */
color: rgb(255, 0, 0);         /* RGB */
color: rgba(255, 0, 0, 0.5);   /* RGBA (with transparency) */

Background:

background-color: lightblue;
background-image: url('img.jpg');

Task: Create a div with background-color #3498db and white text.