html {
  scroll-behavior: smooth;
  
  scrollbar-color: #303030 #3f3f3f; 
  
}

body {
  height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  font-family: Gotham, sans-serif;
  color: #ffffff;
  background-color: #202020;
  
}

.box {
  width: 90%;
  height: 90%;
  
  position: relative;
  
  left: 50%;
  top: 50%;
  
  -webkit-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  
  background: #303030;

  border-style: solid;
  border-radius: 8px;
  border-color: #3f3f3f;
  border-width: 8px;
}

.btn {
  
  position: relative;
  transition-duration: 0.3s;
  transform: translate(0,0);
  background: #303030;

  border-style: solid;
  border-radius: 16px;
  border-color: #3f3f3f;
  border-width: 8px;
  
  text-align: center;
  color: white;
  font-weight: 600;
  height: 100px;
  width: 225px;
}
.btn:hover {
  transition-duration: 0.3s;
  transform: translateY(2px);
}

.bg {
  position: fixed;
  top: 0;
  left: -45px;
  width: 150vw;
  height: 100vh;
  z-index: -1;

  background: repeating-linear-gradient(
    45deg,
    #2a2a2a 0,
    #2a2a2a 16px,
    #303030 16px,
    #303030 32px
  );

  background-size: 45.2548px 45.2548px;

  animation: slide 0.25s linear infinite;
}
@keyframes slide {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(45.25px, 0, 0);
  }
}