JSFiddle - React, Tailwind, and code Playground

HTML

<div class='conjunto'>
    <div></div>
    <div></div>
    <div></div>
</div>

CSS

.conjunto div:nth-child(1) {
      background: -webkit-linear-gradient(green, yellow, blue); /* For Safari 5.1 to 6.0 */
  background: -o-linear-gradient(green, yellow, blue); /* For Opera 11.1 to 12.0 */
  background: -moz-linear-gradient(green, yellow, blue); /* For Firefox 3.6 to 15 */
  background: linear-gradient(green, yellow, blue); /* Standard syntax */
}
.conjunto div:nth-child(2) {
          background: -webkit-linear-gradient(left, green, yellow, blue); /* For Safari 5.1 to 6.0 */
  background: -o-linear-gradient(right, green, yellow, blue); /* For Opera 11.1 to 12.0 */
  background: -moz-linear-gradient(right, green, yellow, blue); /* For Firefox 3.6 to 15 */
  background: linear-gradient(right, green, yellow, blue); /* Standard syntax */
}
.conjunto div:nth-child(3) {
          background: -webkit-radial-gradient(green, yellow, blue); /* For Safari 5.1 to 6.0 */
  background: -o-radial-gradient(green, yellow, blue); /* For Opera 11.1 to 12.0 */
  background: -moz-radial-gradient(green, yellow, blue); /* For Firefox 3.6 to 15 */
  background: radial-gradient(green, yellow, blue); /* Standard syntax */
}

.conjunto div {
    width: 400px;
    height: 200px;
}