#preloader5 {
    /* display: none; */
    margin: -200px 0 0 -300px;  /*縦横半分をネガティブマージンでずらす*/
    position: absolute;     /*body要素に対して絶対配置*/
    top: 50%;       /*上端を中央に*/
    left: 50%;      /*左端を中央に*/
    width: 600px;   /*横幅*/
    height: 400px;  /*縦幅*/
    background-color:#00ff00;
}

 #preloader5{
	position:relative;
	width:30px;
	height:30px;
	background:#3498db;
	border-radius:50px;
	-webkit-animation: preloader_5 1.5s infinite linear;
	-moz-animation: preloader_5 1.5s infinite linear;
	-ms-animation: preloader_5 1.5s infinite linear;
	animation: preloader_5 1.5s infinite linear;
}
#preloader5:after{
	position:absolute;
	width:50px;
	height:50px;
	border-top:10px solid #9b59b6;
	border-bottom:10px solid #9b59b6;
	border-left:10px solid transparent;
	border-right:10px solid transparent;
	border-radius:50px;
	content:'';
	top:-20px;
	left:-20px;
	-webkit-animation: preloader_5_after 1.5s infinite linear;
	-moz-animation: preloader_5_after 1.5s infinite linear;
	-ms-animation: preloader_5_after 1.5s infinite linear;
	animation: preloader_5_after 1.5s infinite linear;
}
@-webkit-keyframes preloader_5 {
    0% {-webkit-transform: rotate(0deg);}
    50% {-webkit-transform: rotate(180deg);background:#2ecc71;}
    100% {-webkit-transform: rotate(360deg);}
}
@-webkit-keyframes preloader_5_after {
    0% {border-top:10px solid #9b59b6;border-bottom:10px solid #9b59b6;}
    50% {border-top:10px solid #3498db;border-bottom:10px solid #3498db;}
    100% {border-top:10px solid #9b59b6;border-bottom:10px solid #9b59b6;}
}
@-moz-keyframes preloader_5 {
    0% {-moz-transform: rotate(0deg);}
    50% {-moz-transform: rotate(180deg);background:#2ecc71;}
    100% {-moz-transform: rotate(360deg);}
}
@-moz-keyframes preloader_5_after {
    0% {border-top:10px solid #9b59b6;border-bottom:10px solid #9b59b6;}
    50% {border-top:10px solid #3498db;border-bottom:10px solid #3498db;}
    100% {border-top:10px solid #9b59b6;border-bottom:10px solid #9b59b6;}
}
@-ms-keyframes preloader_5 {
    0% {-ms-transform: rotate(0deg);}
    50% {-ms-transform: rotate(180deg);background:#2ecc71;}
    100% {-ms-transform: rotate(360deg);}
}
@-ms-keyframes preloader_5_after {
    0% {border-top:10px solid #9b59b6;border-bottom:10px solid #9b59b6;}
    50% {border-top:10px solid #3498db;border-bottom:10px solid #3498db;}
    100% {border-top:10px solid #9b59b6;border-bottom:10px solid #9b59b6;}
}
@keyframes preloader_5 {
    0% {transform: rotate(0deg);}
    50% {transform: rotate(180deg);background:#2ecc71;}
    100% {transform: rotate(360deg);}
}
@keyframes preloader_5_after {
    0% {border-top:10px solid #9b59b6;border-bottom:10px solid #9b59b6;}
    50% {border-top:10px solid #3498db;border-bottom:10px solid #3498db;}
    100% {border-top:10px solid #9b59b6;border-bottom:10px solid #9b59b6;}
}