.crt-charts-container {
    min-height: 20px;
}

.crt-charts-error-notice {
    text-align: center;
}

.crt-charts-container .crt-rotating-plane {
    width: 25px;
    height: 25px; 
    background: rgba(0,0,0,.25);
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 999;
    -webkit-transform: translate(-50%, -50%);
        -ms-transform: translate(-50%, -50%);
            transform: translate(-50%, -50%); 
}