#center_div {
  width: 80%;
  margin: 0 auto;
}

.nassau_image {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 50%;
}

.hidden_class {
    display: none;
}

body {
  font-family: 'Brush Script MT', cursive;
  font-size: xx-large;
}

html {
    min-height:100%;
    background: linear-gradient(
            -45deg,
            rgba(255, 0, 0, 1) 0%,
            rgba(255, 154, 0, 1) 5%,
            rgba(208, 222, 33, 1) 10%,
            rgba(79, 220, 74, 1) 15%,
            rgba(63, 218, 216, 1) 20%,
            rgba(47, 201, 226, 1) 25%,
            rgba(28, 127, 238, 1) 30%,
            rgba(95, 21, 242, 1) 35%,
            rgba(186, 12, 248, 1) 40%,
            rgba(251, 7, 217, 1) 45%,
            rgba(255, 0, 0, 1) 50%,
            rgba(255, 154, 0, 1) 55%,
            rgba(208, 222, 33, 1) 60%,
            rgba(79, 220, 74, 1) 65%,
            rgba(63, 218, 216, 1) 70%,
            rgba(47, 201, 226, 1) 75%,
            rgba(28, 127, 238, 1) 80%,
            rgba(95, 21, 242, 1) 85%,
            rgba(186, 12, 248, 1) 90%,
            rgba(251, 7, 217, 1) 95%,
            rgba(255, 0, 0, 1) 100%
        );
    background-size: 400% 400%;
    background-position: bottom right;

    animation: a 3s linear infinite;
}

@keyframes a {
    to {
        background-position: 33.33% 33.33%;
    }
}