I am using font awesome spin icon through CSS background for loading the page.
You should use fa fa-spinner fa-spin
.
See: Font Awesome Examples
Example:
/** CSS **/
@import url('https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.css');
<!-- HTML -->
<div class="fa fa-spinner fa-spin"></div>
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;
}
<!DOCTYPE html>
<html>
<head>
<link data-require="fontawesome@*" data-semver="4.5.0" rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.css" />
<link rel="stylesheet" href="style.css" />
</head>
<body>
<div class="loading-icon"></div>
</body>
</html>
<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet"/>
<i class="fa fa-spinner fa-spin fa-3x fa-fw"></i>
<i class="fa fa-circle-o-notch fa-spin fa-3x fa-fw"></i>
<i class="fa fa-refresh fa-spin fa-3x fa-fw"></i>
<i class="fa fa-cog fa-spin fa-3x fa-fw"></i>
<i class="fa fa-spinner fa-pulse fa-3x fa-fw"></i>
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.2.0/css/all.css" integrity="sha384-hWVjflwFxL6sNzntih27bfxkr27PmbbK/iSvJ+a4+0owXq79v+lsFkW54bOGbiDQ" crossorigin="anonymous">
<div class="fa-3x">
<i class="fas fa-spinner fa-spin"></i>
<i class="fas fa-circle-notch fa-spin"></i>
<i class="fas fa-sync fa-spin"></i>
<i class="fas fa-cog fa-spin"></i>
<i class="fas fa-spinner fa-pulse"></i>
<i class="fas fa-stroopwafel fa-spin"></i>
</div>
Font Awesome 5 Spinner documentation:
https://fontawesome.com/how-to-use/on-the-web/styling/animating-icons
Font Awesome 5 Spinner Icon list:
https://fontawesome.com/icons?c=spinners