font awesome animated spinner through background

Answer 1

Correct answer: Update CSS as given below.

    /* Styles go here */
.loading-icon {
  position: relative;
  width: 20px;
  height: 20px; 
  margin:50px auto;
  -webkit-animation: fa-spin 2s infinite linear;
  animation: fa-spin 2s infinite linear;
}

.loading-icon:before {
  content: "\f110";
  font-family: FontAwesome;
  font-size:20px;
  position: absolute;
  top: 0; 
}