body{
  display: grid;
  justify-content: center;
  align-items: center;
  background-color: #161616;
  overflow: scroll;
  /* transform: scale(1.5); */
height: 100%;
-webkit-background-size: cover;
background-size: cover;
background-position: center center;


display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
height: 100%;
font: 400 24px/1.5 Lato, sans-serif;
color: white;
background: #100138;
background: -moz-linear-gradient(to bottom, #41025e 0%, #6c047c 100%);
background: -webkit-linear-gradient(to bottom, #41025e 0%, #6c047c 100%);
background: linear-gradient(to bottom, #41025e 0%, #6c047c 100%);
background-repeat: no-repeat;
overflow: scroll;
}

/* button */
.btn {
  margin: auto;
  padding: 15px 40px;
  border: none;
  outline: none;
  color: #ffffff;
  cursor: pointer;
  position: relative;
  z-index: 0;
  border-radius: 12px;
}
.btn::after {
  content: "";
  z-index: -1;
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: #333;
  left: 0;
  top: 0;
  border-radius: 10px;
}

.btn::before {
  content: "";
  background: linear-gradient(
    45deg,
    #fe0505, #FF7300, #FFFB00, #48FF00,
    #00FFD5, #002BFF, #FF00C8, #FF0000
  );
  position: absolute;
  top: -2px;
  left: -2px;
  background-size: 600%;
  z-index: -1;
  width: calc(100% + 4px);
  height:  calc(100% + 4px);
  filter: blur(8px);
  animation: glowing 20s linear infinite;
  transition: opacity .3s ease-in-out;
  border-radius: 10px;
  opacity: 0;
}

@keyframes glowing {
  0% {background-position: 0 0;}
  50% {background-position: 400% 0;}
  100% {background-position: 0 0;}
}


.btn:hover::before 
{
  opacity: 1;
}

.btn:active:after {
  background: transparent;
}

.btn:active {
  color: #000;
  font-weight: bold;
}
*
{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

#wrapper {
  max-width: 48rem;
  margin: 0 auto;
  padding: 3rem 0;
  text-align: center;
}

ul {
  list-style: none;
}

h1 {
  font-size: 2rem;
}

.bg-bubbles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.bg-bubbles li {
  position: absolute;
  display: block;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.15);
  bottom: -160px;
  animation: square 50s infinite;
  transition-timing-function: linear;
}

.bg-bubbles li:nth-child(1) {
  left: 10%;
}

.bg-bubbles li:nth-child(2) {
  left: 20%;
  width: 80px;
  height: 80px;
  animation-duration: 38s;
}

.bg-bubbles li:nth-child(3) {
  left: 25%;
  animation-delay: 4s;
}

.bg-bubbles li:nth-child(4) {
  left: 40%;
  width: 60px;
  height: 60px;
  animation-duration: 46s;
  background-color: rgba(255, 255, 255, 0.25);
}

.bg-bubbles li:nth-child(5) {
  left: 70%;
}

.bg-bubbles li:nth-child(6) {
  left: 80%;
  width: 120px;
  height: 120px;
  animation-delay: 3s;
  background-color: rgba(255, 255, 255, 0.2);
}

.bg-bubbles li:nth-child(7) {
  left: 32%;
  width: 160px;
  height: 160px;
  animation-delay: 7s;
}

.bg-bubbles li:nth-child(8) {
  left: 55%;
  width: 20px;
  height: 20px;
  animation-duration: 40s;
}

.bg-bubbles li:nth-child(9) {
  left: 25%;
  width: 10px;
  height: 10px;
  animation-delay: 2s;
}

.bg-bubbles li:nth-child(10) {
  left: 90%;
  width: 160px;
  height: 160px;
  animation-delay: 11s;
}

@keyframes square {
  0% {
    transform: translateY(0);
  }

  100% {
    transform: translateY(-1500px) rotate(600deg);
  }
}