body {
  background-image: url(3fren.jpg);
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
  margin: 0;
  height: 100vh;
  padding: 0;
  justify-content: center;
  align-items: center;
  display: flex;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  color: #ffffff;
  font-size: 16px;
  line-height: 1.5;
  position: relative;
  font-weight: 400;
}

body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url(christmas-lights-animated.gif);
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
  opacity: 0.7;
  pointer-events: none;
  z-index: 1;
}

body > * {
  position: relative;
  z-index: 2;
}

.a a,
.b a,
.c a {
  color: rgb(0, 2, 4);
  margin: 20px;
  display: inline-block;
  padding: 20px 40px;
  font-size: 32px;
  text-decoration: none;
  font-weight: bold;
  letter-spacing: 1px;
}

a:hover,
a:focus,
a:active {
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
  -webkit-transform: scale(1.1);
  transform: scale(1.1);
}