* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background: linear-gradient(135deg, #0d1117, #161b22);
  color: #fff;
  font-family: system-ui, sans-serif;
  text-align: center;
  overflow: hidden;
  animation: change-background 3s infinite linear;
}

/* Fade-in animation */
.fade-in {
  animation: fadeInUp 1.2s ease-in-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.container {
  max-width: 700px;
  padding: 2rem;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: #bbb;
}

/* Countdown styling */
#countdown {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 2rem;
}

#countdown div {
  background: rgba(255, 255, 255, 0.05);
  padding: 1rem;
  border-radius: 12px;
  min-width: 70px;
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.5);
}

#countdown span {
  display: block;
  font-size: 2rem;
  font-weight: bold;
}

#countdown small {
  font-size: 0.8rem;
  color: #aaa;
}

.links a {
  margin: 0 10px;
  text-decoration: none;
  color: #58a6ff;
  font-weight: bold;
  transition: 0.3s;
}

.links a:hover {
  color: #1f6feb;
}

/* truck */


.loop-wrapper {
  margin: 0 auto;
  position: relative;
  display: block;
  width: 600px;
  height: 250px;
  overflow: hidden;
  border-bottom: 3px solid #fff;
  color: #fff;
}
.mountain {
  position: absolute;
  right: -900px;
  bottom: -20px;
  width: 2px;
  height: 2px;
  box-shadow: 
    0 0 0 50px #4DB6AC,
    60px 50px 0 70px #4DB6AC,
    90px 90px 0 50px #4DB6AC,
    250px 250px 0 50px #4DB6AC,
    290px 320px 0 50px #4DB6AC,
    320px 400px 0 50px #4DB6AC
    ;
  transform: rotate(130deg);
  animation: mtn 20s linear infinite;
}
.hill {
  position: absolute;
  right: -900px;
  bottom: -50px;
  width: 400px;
  border-radius: 50%;
  height: 20px;
  box-shadow: 
    0 0 0 50px #4DB6AC,
    -20px 0 0 20px #4DB6AC,
    -90px 0 0 50px #4DB6AC,
    250px 0 0 50px #4DB6AC,
    290px 0 0 50px #4DB6AC,
    620px 0 0 50px #4DB6AC;
  animation: hill 4s 2s linear infinite;
}
.tree, .tree:nth-child(2), .tree:nth-child(3) {
  position: absolute;
  height: 100px; 
  width: 35px;
  bottom: 0;
  background: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/130015/tree.svg) no-repeat;
}
.rock {
  margin-top: -17%;
  height: 2%; 
  width: 2%;
  bottom: -2px;
  border-radius: 20px;
  position: absolute;
  background: #ddd;
}
.truck, .wheels {
  transition: all ease;
  width: 85px;
  margin-right: -60px;
  bottom: 0px;
  right: 50%;
  position: absolute;
  background: #eee;
}
.truck {
  background: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/130015/truck.svg) no-repeat;
  background-size: contain;
  height: 60px;
}
.truck:before {
  content: " ";
  position: absolute;
  width: 25px;
  box-shadow:
    -30px 28px 0 1.5px #fff,
     -35px 18px 0 1.5px #fff;
}
.wheels {
  background: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/130015/wheels.svg) no-repeat;
  height: 15px;
  margin-bottom: 0;
}

.tree  { animation: tree 3s 0.000s linear infinite; }
.tree:nth-child(2)  { animation: tree2 2s 0.150s linear infinite; }
.tree:nth-child(3)  { animation: tree3 8s 0.050s linear infinite; }
.rock  { animation: rock 4s   -0.530s linear infinite; }
.truck  { animation: truck 4s   0.080s ease infinite; }
.wheels  { animation: truck 4s   0.001s ease infinite; }
.truck:before { animation: wind 1.5s   0.000s ease infinite; }


@keyframes tree {
  0%   { transform: translate(1350px); }
  50% {}
  100% { transform: translate(-50px); }
}
@keyframes tree2 {
  0%   { transform: translate(650px); }
  50% {}
  100% { transform: translate(-50px); }
}
@keyframes tree3 {
  0%   { transform: translate(2750px); }
  50% {}
  100% { transform: translate(-50px); }
}

@keyframes rock {
  0%   { right: -200px; }
  100% { right: 2000px; }
}
@keyframes truck {
  0%   { }
  6%   { transform: translateY(0px); }
  7%   { transform: translateY(-6px); }
  9%   { transform: translateY(0px); }
  10%   { transform: translateY(-1px); }
  11%   { transform: translateY(0px); }
  100%   { }
}
@keyframes wind {
  0%   {  }
  50%   { transform: translateY(3px) }
  100%   { }
}
@keyframes mtn {
  100% {
    transform: translateX(-2000px) rotate(130deg);
  }
}
@keyframes hill {
  100% {
    transform: translateX(-2000px);
  }
}