/* bodyは触らない */
.light-wrapper{
  display:flex;
  justify-content:center;
  align-items:center;
  min-height:45vh;
}

/* 高級感ボタン */
#flashBtn{
  font-size:24px;
  padding:22px 60px;
  border-radius:40px;
  border:none;
  cursor:pointer;

  background:linear-gradient(145deg,#ffffff,#e6e6e6);
  box-shadow:
    8px 8px 18px rgba(0,0,0,0.15),
    -8px -8px 18px rgba(255,255,255,0.9);

  transition: all 0.25s ease;
}

#flashBtn:hover{
  transform:translateY(-3px);
  box-shadow:
    12px 12px 22px rgba(0,0,0,0.18),
    -12px -12px 22px rgba(255,255,255,1);
}

#flashBtn:active{
  transform:translateY(2px);
  box-shadow:
    inset 6px 6px 12px rgba(0,0,0,0.2),
    inset -6px -6px 12px rgba(255,255,255,0.9);
}
.light-description{
  font-size:14px;
  color:#666;
  text-align:center;
  margin-top:20px;
  line-height:1.6;
}