.ng-content-loader{
    position:fixed;
    top: 50%;
    left: 50%;
    width:30em;
    height:10em;
    margin-top: -9em;
    margin-left: -15em;
    border: 2px dashed #2196F3;
    background-color: #ffffff;
}

.ng-content-loader .loader-text {
    height: 90px;
    line-height: 90px;
    text-align: center;
}