body {
  margin: 0;
  padding: 0;
}

.container {
  max-width: 750px;
  margin: 0 auto;
}

img {
  width: 100%;
  height: auto;
  display: block;
}

.img-wrap {
  position: relative;
}



@keyframes pulse {
  0%, 100% {
    transform: translate(-50%, 0) scale(0.9);
  }
  50% {
    transform: translate(-50%, 0) scale(1.0);
  }
}

.btn {
  position: absolute;
  width: 100%;
  animation: pulse 1.5s infinite;
}

.btn-1 {
  bottom: 5%;
  left: 50%;
}
.btn-tokuten {
  bottom: 2%;
  left: 50%;
}

.btn-14 {
  bottom: 3%;
  left: 50%;
}

.fixed-btn {
  position: fixed;
  bottom: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 750px;
  transition: bottom 0.3s ease;
  z-index: 9999;
}

.fixed-btn.show {
  bottom: 20px;
}
.site-footer {
  text-align: center;
  padding: 20px 0;
  font-size: 0.9em;
  background: #ffb6c1;
}

.footer-links {
  margin: 0;
}

.footer-links a {
  color: #333;
  text-decoration: none;
  margin: 0 5px;
}

.footer-links a:hover {
  text-decoration: underline;
}