@import url("https://fonts.googleapis.com/css?family=Lato");
@import url("https://fonts.googleapis.com/css2?family=Oswald:wght@500;600;700&display=swap");

* {
  box-sizing: border-box;
  font-family: "Oswald", sans-serif;
}

body {
  background-image: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);

  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;

  min-height: 100vh;
  font-family: "Lato", sans-serif;
  margin: 0;
}

h1 {
  letter-spacing: 2px;
  text-align: center;
  text-transform: uppercase;
}

.countdown-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}

.countdown-item {
  color: #111;
  font-size: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  line-height: 30px;
  margin: 10px;
  padding-top: 10px;
  position: relative;
  width: 100px;
  height: 100px;
}

.countdown-item span {
  color: #333;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
}

.countdown-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100px;
  height: 100px;
}

.container {
  display: flex;
  transform-style: preserve-3d;
  gap: 10px;
  transform: rotateY(30deg) rotateX(10deg);
}
.container .text {
  position: relative;
  width: 100px;
  height: 100px;
  transform-style: preserve-3d;
  transition: 2.5s ease-in-out;
  transition-delay: calc(0.25s * var(--j));
}
.container:hover .text {
  transform: rotateX(-360deg);
}
.container:hover .text:last-child {
  transform: rotateX(630deg);
}
.container .text::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background: #373737;
  transform-origin: left;
  transform: rotateY(90deg) translateX(-50px);
}
.container .text:last-child:before {
  background: #29ab3c;
}
.container .text span {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(#434343, #535353);
  display: flex;
  justify-content: center;
  font-size: 4em;
  color: #ffffff;
  transform-style: preserve-3d;
  transform: rotateX(calc(90deg * var(--i))) translateZ(50px);
}

.container .text:last-child span {
  background: linear-gradient(#29c040, #32ed4e);
  color: #333333;
}

footer {
  background-color: #222;
  color: #fff;
  font-size: 14px;
  bottom: 0;
  position: fixed;
  left: 0;
  right: 0;
  text-align: center;
  z-index: 999;
}

footer p {
  margin: 10px 0;
}

footer i {
  color: red;
}

footer a {
  color: #3c97bf;
  text-decoration: none;
}