*{margin:0;padding:0}body{background:#fff;font-family:微软雅黑}.loading-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#fff;display:flex;justify-content:center;align-items:center;z-index:9999}.loading-spinner{width:60px;height:60px;border:10px solid #e0e0e0;border-top:10px solid #1a75ff;border-radius:50%;position:relative;animation:spin 1s linear infinite}.loading-spinner:after{content:"";position:absolute;top:-14px;left:-14px;right:-14px;bottom:-14px;border-radius:50%;animation:haloo 2s linear infinite}@keyframes haloo{0%{box-shadow:0 0 0 5px rgba(51,102,204,.8)}50%{box-shadow:0 0 0 20px rgba(235,240,250,.4)}to{box-shadow:0 0 0 0 #fff}}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}