div.main-preloader-holder {
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    background: #fff;
    z-index: 999999;
}

div.main-preloader-holder div.main-preloader {
    width: 100%;
    height: 100%;
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flex;
    display: -o-flex;
    display: flex;
    -webkit-flex-direction: row;
    -moz-flex-direction: row;
    -ms-flex-direction: row;
    -o-flex-direction: row;
    flex-direction: row;
    -webkit-flex-wrap: wrap;
    -moz-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    -o-flex-wrap: wrap;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
}


div.main-preloader-holder div.main-preloader div.logo {
    height: 50px;
    min-height: 50px;
}

div.main-preloader-holder div.main-preloader div.logo img{
    height: 100%;
}