.d-1{font-size: 0;}
.d-1 li{width: 182px;height: 98px;position: relative;box-sizing: border-box;float: left;display: inline-block;margin-right: 51px;margin-bottom: 45px;box-shadow: 0 0 7px 4px rgba(0,0,0,0.1);}
.d-1 li:nth-child(4n){margin-right: 0;}
.d-1 li a{display: block;width: 100%;height: 100%;}
.d-1 li a img{position: absolute;max-width: 90%;max-height: 90%;top: 50%;left: 50%;transform: translate(-50%,-50%);-webkit-transform: translate(-50%,-50%);-moz-transform: translate(-50%,-50%);-ms-transform: translate(-50%,-50%);}