*, *:before, *:after {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}



body {
  font-family: Arial, "Hiragino Kaku Gothic Pro W3", Meiryo, sans-serif;
  background-color: #333;
  color: #fff;
  text-align: center;
}
body a, body a:visited {
  color: #ccc;
  text-decoration: none;
}
body a:hover {
  color: #aaa;
}

#divGallery{margin-top:8%;}

.button-area .button {
  display: inline-block;
  padding: 10px;
  margin: 30px 5px;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.3s ease;
}
.button-area .button:hover {
  background-color: rgba(255, 255, 255, 0.32);
}
.button-area .button.active {
  background-color: rgba(255, 255, 255, 0.52);
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.6) inset;
}
.button-area input[type=checkbox] {
  display: none;
}

#mnsry_container {
  position: relative;
}
#mnsry_container:hover img {
  opacity: 0.28;
}
#mnsry_container article {
  width: 25%;
  min-height: 200px;
  overflow: hidden;
  cursor: pointer;
  opacity: 0;
}
#mnsry_container article h1 {
  position: absolute;
  top: 46%;
  left: 0;
  width: 100%;
  text-shadow: 0 0 10px rgba(0, 0, 0, 0.4);
  transition: all 1.2s;
  z-index: 1;
}
#mnsry_container article img {
  display: block;
  width: 100%;
  transition: all 0.8s;
}
#mnsry_container article:hover h1 {
  transform: translate3d(0, 18px, 0) scale(1.2, 0.4);
  opacity: 0;
}
#mnsry_container article:hover img {
  opacity: 1;
  transform: scale(1.04);
}

#loading_msg {
  position: fixed;
  top: 48%;
  width: 100%;
  z-index: -1;
}

@media (max-width: 860px) {
  #mnsry_container article {
    width: 50%;
    min-height: 150px;
  }
}
@media (max-width: 667px) {
  #mnsry_container article {
    width: 100%;
    min-height: 220px;
  }
}