HTML

CSS

JS

button {
  position: relative;
  padding: 10px 20px;
  border-radius: 7px;
  border: 1px solid rgb(61, 106, 255);
  font-size: 14px;
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 2px;
  background: transparent;
  color: #fff;
  overflow: hidden;
  -webkit-box-shadow: 0 0 0 0 transparent;
          box-shadow: 0 0 0 0 transparent;
  -webkit-transition: all 0.2s ease-in;
  transition: all 0.2s ease-in;
  cursor: pointer;
}

button:hover {
  background: rgb(61, 106, 255);
  -webkit-box-shadow: 0 0 30px 5px rgba(0, 142, 236, 0.815);
          box-shadow: 0 0 30px 5px rgba(0, 142, 236, 0.815);
  -webkit-transition: all 0.2s ease-out;
  transition: all 0.2s ease-out;
}

button:hover::before {
  -webkit-animation: glow 0.5s 0s linear;
  animation: glow 0.5s 0s linear;
}

button::before {
  content: '';
  display: block;
  width: 0px;
  height: 86%;
  position: absolute;
  top: 7%;
  left: 0%;
  opacity: 0;
  background: #fff;
  -webkit-box-shadow: 0 0 50px 30px #fff;
          box-shadow: 0 0 50px 30px #fff;
  -webkit-transform: skewX(-20deg);
  -ms-transform: skewX(-20deg);
  transform: skewX(-20deg);
}

@-webkit-keyframes glow {
  from {
    opacity: 0;
    left: 0%;
  }

50% {
    opacity: 1;
  }

to {
    opacity: 0;
    left: 100%;
  }
}

@keyframes glow {
  from {
    opacity: 0;
    left: 0%;
  }

50% {
    opacity: 1;
  }

to {
    opacity: 0;
    left: 100%;
  }
}

button:active {
  -webkit-box-shadow: 0 0 0 0 transparent;
          box-shadow: 0 0 0 0 transparent;
  -webkit-transition: box-shadow 0.2s ease-in;
  -webkit-transition: -webkit-box-shadow 0.2s ease-in;
  transition: -webkit-box-shadow 0.2s ease-in;
  transition: box-shadow 0.2s ease-in;
  transition: box-shadow 0.2s ease-in, -webkit-box-shadow 0.2s ease-in;
}

Neon Glow Button

Button with a neon glow when hovered or clicked. The glow effect is achieved via the box-shadow and keyframes properties.