.gCover{position: relative;overflow: hidden;}
.gCover img{position: absolute;overflow: hidden;display: block;}
.gCover.width{}
.gCover.width>img{top:50%;left: 0;-webkit-transform: translateY(-50%);transform: translateY(-50%);height: auto;width: 100%;}
.gCover.height{}
.gCover.height>img{top:0;left: 50%;-webkit-transform: translateX(-50%);transform: translateX(-50%);height: 100%;width: auto;}