* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body, html {
  height: 100%;
  font-family: Arial, sans-serif;
  scroll-behavior: smooth;
}
.video-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
}
.overlay {
  position: relative;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
button {
 --glow-color: rgb(217, 176, 255);
 --glow-spread-color: rgba(191, 123, 255, 0.781);
 --enhanced-glow-color: rgb(231, 206, 255);
 --btn-color: rgb(100, 61, 136);
 border: .25em solid var(--glow-color);
 padding: 1em 3em;
 color: var(--glow-color);
 font-size: 15px;
 font-weight: bold;
 background-color: var(--btn-color);
 border-radius: 1em;
 outline: none;
 box-shadow: 0 0 1em .25em var(--glow-color),
        0 0 4em 1em var(--glow-spread-color),
        inset 0 0 .75em .25em var(--glow-color);
 text-shadow: 0 0 .5em var(--glow-color);
 position: relative;
 transition: all 0.3s;
}

.fade-in {
  opacity: 1 !important;
}

.fade-out {
  opacity: 0 !important;
}
button::after {
 pointer-events: none;
 content: "";
 position: absolute;
 top: 120%;
 left: 0;
 height: 100%;
 width: 100%;
 background-color: var(--glow-spread-color);
 filter: blur(2em);
 opacity: .7;
 transform: perspective(1.5em) rotateX(35deg) scale(1, .6);
}
button:hover {
 color: var(--btn-color);
 background-color: var(--glow-color);
 box-shadow: 0 0 1em .25em var(--glow-color),
        0 0 4em 2em var(--glow-spread-color),
        inset 0 0 .75em .25em var(--glow-color);
}
button:active {
 box-shadow: 0 0 0.6em .25em var(--glow-color),
        0 0 2.5em 2em var(--glow-spread-color),
        inset 0 0 .5em .25em var(--glow-color);
}