#by-loading{
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: auto;
    height: 100%;
    width: 100%;
    max-width: 640px;
    z-index: 1000;
    background-color: #bdeefe;
}
#by-loading .by-loading-bg{display: block; width: 100%; height: auto; position: absolute; bottom: 0; left: 0;}
#by-loading .by-loading-logo{display: block; position: absolute; width: 180px; top: 90px; left: 50%; margin-left: -90px; }
#by-loading .by-loading-txt{ text-align: center; position: absolute; top: 50%; width: 100%; color: #22a3d4; font-size: 20px;}