.neon_bulb {
  position: relative;
  display: inline-block;
  padding: 15px 15px;
  border-radius: 5px;
  margin: 15px 7px;
  color: #26ff31;
  background-color:  rgba(95, 255, 130, 0.1);
  font-size: 1rem;
  font-weight: bold;
  text-decoration: none;
  text-transform: uppercase;
  overflow: hidden;
  transition: 0.5s;
  letter-spacing: 4px;
  -webkit-box-reflect: below 1px linear-gradient(transparent, #0005);
}


.neon_bulb:hover {
  background: #26ff31;
  color: #6e0e0e;
  box-shadow: 0 0 5px #26ff31, 0 0 15px #26ff31, 0 0 20px #26ff31,
    0 0 100px #26ff31;
}

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

.neon_bulb span:nth-child(1) {
  top: 0;
  left: -100%;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, #26ff31);
  animation: animate1 1s linear infinite;
}

@keyframes animate1 {
  0% {
    left: -100%;
  }
  50%,
  100% {
    left: 100%;
  }
}

.neon_bulb span:nth-child(2) {
  top: -100;
  right: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, transparent, #26ff31);
  animation: animate2 1s linear infinite;
  animation-delay: 0.25s;
}

@keyframes animate2 {
  0% {
    top: -100%;
  }
  50%,
  100% {
    top: 100%;
  }
}

.neon_bulb span:nth-child(3) {
  bottom: 0;
  right: -100%;
  width: 100%;
  height: 2px;
  background: linear-gradient(270deg, transparent, #26ff31);
  animation: animate3 1s linear infinite;
  animation-delay: 0.5s;
}

@keyframes animate3 {
  0% {
    right: -100%;
  }
  50%,
  100% {
    right: 100%;
  }
}

.neon_bulb span:nth-child(4) {
  bottom: -100%;
  left: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(360deg, transparent, #26ff31);
  animation: animate4 1s linear infinite;
  animation-delay: 0.75s;
}

@keyframes animate4 {
  0% {
    bottom: -100%;
  }
  50%,
  100% {
    bottom: 100%;
  }
}