.c-img-preview{position:fixed;left:0;top:0;width:100vw;height:100vh;z-index:9999;background:#fff;overflow:hidden}.preview-head{position:fixed;left:0;top:0;height:50px;width:100%;background-color:#fff;box-shadow:0 2px 6px 0 rgba(0,0,0,.05);transition:all .3s ease-in-out;display:-ms-flexbox;display:flex;-ms-flex-align:center;align-items:center;padding:0 16px}.preview-head h1{text-align:center;line-height:50px;-ms-flex:1;flex:1;margin-bottom:0}.preview-body{background:#f1f1f1;text-align:center;height:calc(100vh - 50px);overflow-y:auto;margin-top:50px;padding:16px}.preview-body img{width:800px;display:block;margin:0 auto}.preview-body .page{text-align:center;line-height:48px;font-size:14px}.preview-head-back{cursor:pointer;display:-ms-flexbox;display:flex;-ms-flex-align:center;align-items:center}