/*：当前代码仅为演示用,不能二次开发。源码只发布在: http://www.bootstrapmb.com/item/1939(此说明只在演示页面有,不在下载的源码里)*//*preloader*/.preloader {	position: fixed;	left: 0;	top: 0;	right: 0;	bottom: 0;	width: 100%;	height: 100%;	z-index: 99999;	background-color: #fff;	display: flex;}.spinner {  width: 40px;  height: 40px;  margin: auto;  background-color: #ff0000;  border-radius: 50%;    -webkit-animation: sk-scaleout 1.0s infinite ease-in-out;  animation: sk-scaleout 1.0s infinite ease-in-out;}@-webkit-keyframes sk-scaleout {  0% { -webkit-transform: scale(0) }  100% {    -webkit-transform: scale(1.0);    opacity: 0;  }}@keyframes sk-scaleout {  0% {     -webkit-transform: scale(1.0);    transform: scale(1.0);  } 100% {    -webkit-transform: scale(0);    transform: scale(0);    opacity: 0;  }}/*：当前代码仅为演示用,不能二次开发。源码只发布在: http://www.bootstrapmb.com/item/1939(此说明只在演示页面有,不在下载的源码里)*/