footer {
  position: relative;
  padding: 100px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  background-color: #3586ff;
}

footer .footerMenu {
  display: flex;
}

footer .footerMenu li {
  list-style: none;
}

footer .footerMenu li a {
  display: inline-block;
  text-decoration: none;
  margin: 20px;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.copyrightText {
  color: #fff;
  text-align: center;
  letter-spacing: 1px;
}

.neon {
  position: relative;
  display: inline-block;
  padding: 15px 30px;
  color: #0d0f58;
  text-transform: uppercase;
  letter-spacing: 4px;
  text-decoration: none;
  font-size: 24px;
  overflow: hidden;
  transition: 0.2s;
}

.neon:hover {
  color: #255784;
  background: #2227ac;
  box-shadow: 0 0 10px #2227ac, 0 0 40px #2227ac, 0 0 80px #2227ac;
  transition-delay: 1s;
}

.neon span {
  position: absolute;
  display: block;
}

.neon span:nth-child(1) {
  top: 0;
  left: -100%;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, #0d0f58);
}

.neon:hover span:nth-child(1) {
  left: 100%;
  transition: 1s;
}

.neon span:nth-child(3) {
  bottom: 0;
  right: -100%;
  width: 100%;
  height: 2px;
  background: linear-gradient(270deg, transparent, #0d0f58);
}

.neon:hover span:nth-child(3) {
  right: 100%;
  transition: 1s;
  transition-delay: 0.5s;
}

.neon span:nth-child(2) {
  top: -100%;
  right: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, transparent, #0d0f58);
}

.neon:hover span:nth-child(2) {
  top: 100%;
  transition: 1s;
  transition-delay: 0.25s;
}

.neon span:nth-child(4) {
  bottom: -100%;
  left: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(360deg, transparent, #0d0f58);
}

.neon:hover span:nth-child(4) {
  bottom: 100%;
  transition: 1s;
  transition-delay: 0.75s;
}

footer .wave {
  position: absolute;
  top: -100px;
  left: 0;
  width: 100%;
  height: 100px;
  background: url(../img/wave.png);
  background-size: 1000px 100px;
}

footer .wave#wave1 {
  z-index: 1000;
  opacity: 1;
  bottom: 0;
  animation: animateWave 4s linear infinite;
}

footer .wave#wave2 {
  z-index: 999;
  opacity: 0.5;
  bottom: 10px;
  animation: animateWave_02 4s linear infinite;
}

footer .wave#wave3 {
  z-index: 1000;
  opacity: 0.2;
  bottom: 15px;
  animation: animateWave 3s linear infinite;
}

footer .wave#wave4 {
  z-index: 999;
  opacity: 0.7;
  bottom: 20px;
  animation: animateWave_02 3s linear infinite;
}

@keyframes animateWave {
  0% {
    background-position-x: 1000px;
  }
  100% {
    background-position-x: 0px;
  }
}

@keyframes animateWave_02 {
  0% {
    background-position-x: 0px;
  }
  100% {
    background-position-x: 1000px;
  }
}