html, body {
  overflow: hidden;
}

img.bg {
  min-height: 100%;
  min-width: 1024px;
    
  width: 100%;
  height: auto;
    
  position: fixed;
  top: 0;
  left: 0;
}

@media screen and (max-width: 1024px) {
  img.bg {
    left: 50%;
    margin-left: -512px;
  }
}

.fight-1 {
  position: absolute;
  bottom: -1rem;
  left: 37rem;
  width: 25%;
  height: auto;
}
.fight-2 {
  position: absolute;
  bottom: -0.25rem;
  left: 41rem;
  width: 17%;
  height: auto;
}
.fight-3 {
  position: absolute;
  bottom: -2.3rem;
  left: 41rem;
  width: 22%;
  height: auto;
}
.fight-4 {
  position: absolute;
  bottom: 3rem;
  left: 41rem;
  width: 22%;
  height: auto;
}
.fight-5 {
  position: absolute;
  bottom: 0rem;
  left: 8rem;
  width: 60%;
  height: auto;
}
.fight-6 {
  position: absolute;
  bottom: 1rem;
  left: 3rem;
  width: 15%;
  height: auto;
}
.fight-7 {
  position: absolute;
  bottom: 7rem;
  left: 27rem;
  width: 35%;
  height: auto;
}
.fight-7-body {
  background-color: rgb(106, 103, 103);
}

.fight-8 {
  position: absolute;
  bottom: -0.10rem;
  left: 35rem;
  width:30%;
  height: auto;
}

#fight-8-bg {
  height: 0%;
}

.fight-9.walker {
  position: absolute;
  bottom: -2rem;
  left: 1rem;
  width:30%;
  height: auto;
  animation: patrol 10s linear infinite;
}

@keyframes patrol {
  0% { left: -15rem; }
  100% { left: 95rem; }
}

.nav-btn {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  background: rgba(0, 0, 0, 0.45);
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.6);
  border-radius: 999px;
  width: 3rem;
  height: 3rem;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  backdrop-filter: blur(2px);
}

.nav-btn.left { left: 1rem; }
.nav-btn.right { right: 1rem; }

.nav-btn:hover {
  background: rgba(0, 0, 0, 0.65);
  border-color: #fff;
}

@media (max-width: 600px) {
  .nav-btn {
    width: 2.5rem;
    height: 2.5rem;
    font-size: 1.25rem;
  }
}