.mdl-card {
    box-shadow: none;
    min-height: unset;
}

.firebaseui-id-page-callback {
    border: 4px solid #f3f3f3;
    border-radius: 50%;
    border-top: 4px solid #2196f3;
    width: 64px;
    height: 64px;
    -webkit-animation: spin 2s linear infinite;
    animation: spin 2s linear infinite;
}

.firebaseui-info-bar {
    display: none;
}

div.mdl-progress::after {
    display: none;
}

.mdl-progress {
    display: none;
}

.mdl-button--raised.mdl-button--colored {
    background: #2196f3;
}

.mdl-button--raised.mdl-button--colored:hover {
    background: #2196f3;
}

.mdl-button--primary.mdl-button--primary {
    color: #2196f3;
}

 /* Safari */
  @-webkit-keyframes spin {
    0% { -webkit-transform: rotate(0deg); }
    100% { -webkit-transform: rotate(360deg); }
  }
  
  @keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }