/* Variables */
* {
    box-sizing: border-box;
  }

  body {
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    padding-top: 2rem;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
  }

  h1.display-5 {
    margin-bottom: 1rem;
  }

  a {
    margin-bottom: .5rem;
  }
.container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  flex: 1;
}

.footer-gradiant {
  height: 3rem;
  width: 100%;
  margin: 0;
  padding: 0;
  text-align: center;
  background: linear-gradient(to right, red, orange, yellow, green, blue, indigo, violet);
  background-size: 1400% 100%;
  animation: rainbow 15s linear infinite;
}

@keyframes rainbow {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}