.spec-preview{position:relative;width:400px;height:400px;border:1px solid #ccc}.spec-preview img{width:100%;height:100%}.spec-preview .event{width:100%;height:100%;position:absolute;top:0;left:0;z-index:998}.spec-preview .mask{width:50%;height:50%;background-color:rgba(171,250,171,.3);position:absolute;left:0;top:0;display:none}.spec-preview .big{width:100%;height:100%;position:absolute;top:-1px;left:100%;border:1px solid #aaa;overflow:hidden;z-index:998;display:none;background:#fff}.spec-preview .big img{width:200%;max-width:200%;height:200%;position:absolute;left:0;top:0}.spec-preview .event:hover~.big,.spec-preview .event:hover~.mask{display:block}