CodePen Embed - Simple CSS Loading animation

<div class="loading-container">
    <div class="loading"></div>
    <div id="loading-text">loading</div>
</div>

<!--// Link Attribution -->
<a href="http://www.domsammut.com/about#utm_source=web&utm_medium=demo&utm_campaign=CodePen" title="domsammut.com" id="link">domsammut.com</a>

#link {color: #E45635;display:block;font: 12px "Helvetica Neue", Helvetica, Arial, sans-serif;text-align:center; text-decoration: none;}
#link:hover {color: #CCCCCC}

#link, #link:hover {-webkit-transition: color 0.5s ease-out;-moz-transition: color 0.5s ease-out;-ms-transition: color 0.5s ease-out;-o-transition: color 0.5s ease-out;transition: color 0.5s ease-out;}

/** BEGIN CSS **/
        body {background: #333333;}
        @keyframes rotate-loading {
            0%  {transform: rotate(0deg);-ms-transform: rotate(0deg); -webkit-transform: rotate(0deg); -o-transform: rotate(0deg); -moz-transform: rotate(0deg);}
            100% {transform: rotate(360deg);-ms-transform: rotate(360deg); -webkit-transform: rotate(360deg); -o-transform: rotate(360deg); -moz-transform: rotate(360deg);}
        }

        @-moz-keyframes rotate-loading {
            0%  {transform: rotate(0deg);-ms-transform: rotate(0deg); -webkit-transform: rotate(0deg); -o-transform: rotate(0deg); -moz-transform: rotate(0deg);}
            100% {transform: rotate(360deg);-ms-transform: rotate(360deg); -webkit-transform: rotate(360deg); -o-transform: rotate(360deg); -moz-transform: rotate(360deg);}
        }

        @-webkit-keyframes rotate-loading {
            0%  {transform: rotate(0deg);-ms-transform: rotate(0deg); -webkit-transform: rotate(0deg); -o-transform: rotate(0deg); -moz-transform: rotate(0deg);}
            100% {transform: rotate(360deg);-ms-transform: rotate(360deg); -webkit-transform: rotate(360deg); -o-transform: rotate(360deg); -moz-transform: rotate(360deg);}
        }

        @-o-keyframes rotate-loading {
            0%  {transform: rotate(0deg);-ms-transform: rotate(0deg); -webkit-transform: rotate(0deg); -o-transform: rotate(0deg); -moz-transform: rotate(0deg);}
            100% {transform: rotate(360deg);-ms-transform: rotate(360deg); -webkit-transform: rotate(360deg); -o-transform: rotate(360deg); -moz-transform: rotate(360deg);}
        }

        @keyframes rotate-loading {
            0%  {transform: rotate(0deg);-ms-transform: rotate(0deg); -webkit-transform: rotate(0deg); -o-transform: rotate(0deg); -moz-transform: rotate(0deg);}
            100% {transform: rotate(360deg);-ms-transform: rotate(360deg); -webkit-transform: rotate(360deg); -o-transform: rotate(360deg); -moz-transform: rotate(360deg);}
        }

        @-moz-keyframes rotate-loading {
            0%  {transform: rotate(0deg);-ms-transform: rotate(0deg); -webkit-transform: rotate(0deg); -o-transform: rotate(0deg); -moz-transform: rotate(0deg);}
            100% {transform: rotate(360deg);-ms-transform: rotate(360deg); -webkit-transform: rotate(360deg); -o-transform: rotate(360deg); -moz-transform: rotate(360deg);}
        }

        @-webkit-keyframes rotate-loading {
            0%  {transform: rotate(0deg);-ms-transform: rotate(0deg); -webkit-transform: rotate(0deg); -o-transform: rotate(0deg); -moz-transform: rotate(0deg);}
            100% {transform: rotate(360deg);-ms-transform: rotate(360deg); -webkit-transform: rotate(360deg); -o-transform: rotate(360deg); -moz-transform: rotate(360deg);}
        }

        @-o-keyframes rotate-loading {
            0%  {transform: rotate(0deg);-ms-transform: rotate(0deg); -webkit-transform: rotate(0deg); -o-transform: rotate(0deg); -moz-transform: rotate(0deg);}
            100% {transform: rotate(360deg);-ms-transform: rotate(360deg); -webkit-transform: rotate(360deg); -o-transform: rotate(360deg); -moz-transform: rotate(360deg);}
        }

        @keyframes loading-text-opacity {
            0%  {opacity: 0}
            20% {opacity: 0}
            50% {opacity: 1}
            100%{opacity: 0}
        }

        @-moz-keyframes loading-text-opacity {
            0%  {opacity: 0}
            20% {opacity: 0}
            50% {opacity: 1}
            100%{opacity: 0}
        }

        @-webkit-keyframes loading-text-opacity {
            0%  {opacity: 0}
            20% {opacity: 0}
            50% {opacity: 1}
            100%{opacity: 0}
        }

        @-o-keyframes loading-text-opacity {
            0%  {opacity: 0}
            20% {opacity: 0}
            50% {opacity: 1}
            100%{opacity: 0}
        }
        .loading-container,
        .loading {
            height: 100px;
            position: relative;
            width: 100px;
            border-radius: 100%;
        }


        .loading-container { margin: 40px auto }

        .loading {
            border: 2px solid transparent;
            border-color: transparent #fff transparent #FFF;
            -moz-animation: rotate-loading 1.5s linear 0s infinite normal;
            -moz-transform-origin: 50% 50%;
            -o-animation: rotate-loading 1.5s linear 0s infinite normal;
            -o-transform-origin: 50% 50%;
            -webkit-animation: rotate-loading 1.5s linear 0s infinite normal;
            -webkit-transform-origin: 50% 50%;
            animation: rotate-loading 1.5s linear 0s infinite normal;
            transform-origin: 50% 50%;
        }

        .loading-container:hover .loading {
            border-color: transparent #E45635 transparent #E45635;
        }
        .loading-container:hover .loading,
        .loading-container .loading {
            -webkit-transition: all 0.5s ease-in-out;
            -moz-transition: all 0.5s ease-in-out;
            -ms-transition: all 0.5s ease-in-out;
            -o-transition: all 0.5s ease-in-out;
            transition: all 0.5s ease-in-out;
        }

        #loading-text {
            -moz-animation: loading-text-opacity 2s linear 0s infinite normal;
            -o-animation: loading-text-opacity 2s linear 0s infinite normal;
            -webkit-animation: loading-text-opacity 2s linear 0s infinite normal;
            animation: loading-text-opacity 2s linear 0s infinite normal;
            color: #ffffff;
            font-family: "Helvetica Neue, "Helvetica", ""arial";
            font-size: 10px;
            font-weight: bold;
            margin-top: 45px;
            opacity: 0;
            position: absolute;
            text-align: center;
            text-transform: uppercase;
            top: 0;
            width: 100px;
        }

/*
Dom Sammut 2013
***************
Web: www.domsammut.com
Twitter: www.twitter.com/domsammut

View codepen on my website: https://www.domsammut.com/projects/pure-css-loading-animation

*/

This Pen is owned by Dom Sammut on CodePen.

See more by @domsammut on CodePen

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