body, html{
    height: 100%;
    margin: 0;
}

.bg {
    position: absolute;
    width: 100%;
    height: 100vh;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    opacity: 1;
    z-index: 4;
}
.bg2{
    position: absolute;
    width: 100%;
	height: 100vh;

    z-index: 4;
}
.bg3{
    position: fixed;
    width: 100%;
    height: 100vh;
    background-color: #fff;
    z-index: 3;
}
.centered {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.centered img{
	width: 100%;
	max-width: 700px;
}
.enterbtn{
  text-align: center;
}
.enterbtn button {
  padding: 5px 40px;
  background: transparent;
  color:#000000;
  border: 1px solid #000000;
  border-radius: 4px;
  font-size: 18px;
  cursor: pointer;
  font-family: 微軟正黑體;
}

.enterbtn button:hover {
  background: #ca0915;
  color: #ffffff;
  border: 1px solid #ca0915;
  border-radius: 4px;
  transition: all .3s ease-in-out;
  box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24),0 17px 50px 0 rgba(0,0,0,0.19);
}