body { background:#f4f6fb; }
.sidebar { background: #fff; border-right:1px solid #e6e8ef; min-height: calc(100vh - 70px); }
.card { border:0; box-shadow:0 2px 12px rgba(0,0,0,.06); }
.flash-alert { position:fixed; right:15px; bottom:15px; z-index:2000; }
@media (max-width: 991px) {
  .sidebar { min-height:auto; border-right:0; border-bottom:1px solid #e6e8ef; }
}