.page404{font-family:NanumSquareEB;font-size:100px;display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;background-color:#538fff;color:#fff;-webkit-animation:notfound 2s infinite;animation:notfound 2s infinite}@-webkit-keyframes notfound{0%{background-color:#538fff;color:#fff}50%{background-color:#fff;color:#538fff}to{background-color:#538fff;color:#fff}}@keyframes notfound{0%{background-color:#538fff;color:#fff}50%{background-color:#fff;color:#538fff}to{background-color:#538fff;color:#fff}}