body{

    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(to right, rgb(227, 16, 255), rgb(78, 174, 253));
}

.container{
    margin: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

button{
    padding: 1rem;
    background-color: skyblue;
}

#coin{
    position: relative;
    width: 15rem;
    height: 15rem;
    margin: 2rem 0rem;
    transform-style: preserve-3d;
}

#coin div{
    width: 100%;
    height: 100%;
    border: 2px solid rgb(0, 0, 0);
    border-radius: 50%;
    backface-visibility: hidden;
    background-size: contain;
    position: absolute;
}

.headsClass{
    background-image: url("/portfolio_r0u/assets/img/Blac-face.png");
}

.animate-heads{
    animation: flipHeads 3s;
    animation-fill-mode: forwards;
}

@keyframes flipHeads {

    from{
        transform: rotateY(0deg);
    }

    to{
        transform: rotateY(1800deg);
    }
    
}

.tailsClass{
    background-image: url("/portfolio_r0u/assets/img/White-face.png");

    transform: rotateY(-180deg);

}

.animate-tails{
    animation: flipTails 3s;
    animation-fill-mode: forwards;
}

@keyframes flipTails {

    from{
        transform: rotateY(0deg);
    }

    to{
        transform: rotateY(1620deg);
    }
    
}


button {
  --glow-color: rgb(153, 252, 243);
  --glow-spread-color: rgba(17, 5, 29, 0.877);
  --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: 20px;
  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;
 }
 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);
 }