.loading {
    margin: 0 auto;
    text-align: center;
}
.loading-img {
    height: 280px;
    left: 50%;
    margin: -140px 0 1rem -140px;
    position: absolute;
    max-width: 100%;
    top: 50%;
    width: 280px;

    -webkit-animation-name: spinnerRotate;
    -webkit-animation-duration: 5s;
    -webkit-animation-iteration-count: infinite;
    -webkit-animation-timing-function: linear;
    -moz-animation-name: spinnerRotate;
    -moz-animation-duration: 5s;
    -moz-animation-iteration-count: infinite;
    -moz-animation-timing-function: linear;
    -ms-animation-name: spinnerRotate;
    -ms-animation-duration: 5s;
    -ms-animation-iteration-count: infinite;
    -ms-animation-timing-function: linear;
}
.loading h4 {
    font-size: 1.5rem;
    font-weight: bold;
    margin-top: 350px;
    text-align: center;
}
@-webkit-keyframes spinnerRotate {
    from{-webkit-transform:rotate(0deg);}
    to{-webkit-transform:rotate(360deg);}
}
@-moz-keyframes spinnerRotate {
    from{-moz-transform:rotate(0deg);}
    to{-moz-transform:rotate(360deg);}
}
@-ms-keyframes spinnerRotate {
    from{-ms-transform:rotate(0deg);}
    to{-ms-transform:rotate(360deg);}
}