.background-card{text-align:right;margin-top:20px;background-color:#fff}.background-card,.grid-line{width:100%;min-height:780px;height:auto}.grid-line{text-align:center;color:#00f;box-sizing:border-box;background:-webkit-linear-gradient(top,transparent 15px,#eee 0),-webkit-linear-gradient(left,transparent 15px,#eee 0);background-size:16px 16px;position:relative;display:-ms-flexbox;display:flex;-ms-flex-wrap:wrap;flex-wrap:wrap}.mini-div{width:480px;min-height:400px;height:auto;margin:20px}