body {
    padding: 0;
    margin: 0;
    font-family: Roboto, "Helvetica Neue", sans-serif;
    background-color: #fafafa;
}
.loader {
    color: #757575;
    font-size: 11px;
    display: flex;
    margin: 0;
    align-items: center;
    position: absolute;
    top: 50%;
    margin-top: -25px;
    width: 100%;
    flex-direction: column;
}
.loader .material-icons{
    padding-bottom: 4px;
    -webkit-animation: colorchange 2s infinite;
    animation: colorchange 2s infinite;
    font-size: 32px;
}
@-webkit-keyframes colorchange {
    0% {color: #757575;}
    50% {color: #ccc;}
    100% {color: #757575;}
}