body {
    font-family: sans-serif;
    text-align: center;
}
#ErrorMessage {
    color: red;
}
.d-none {
    display: none;
}
h2,
h3 {
    animation: title 6s infinite;
}
img {
    animation: loader 4s infinite;
    transition: 0.5s ease-in-out;
    max-width: 250px;
}
@keyframes title {
    0% { color: red; }
    33% { color: springgreen; }
    66% { color: blue; }
    100% { color: red; }
}
@keyframes loader {
    0% { transform: rotate(0.0deg) scale(1.0); }
    50% { transform: rotate(360deg) scale(0.50); }
    100% { transform: rotate(0deg) scale(1.0); }
}