body {
  background-color: #000;
  font-family: arial;
  font-size: 12px;
  color: #000;
  margin: 0;
  overflow: none;

  /*width: calc(100% + 1px);
  height: calc(100% + 1px);*/
}

/*disable selecting any text*/
* {
  -webkit-user-select: none; /* Safari */
  -moz-user-select: none; /* Firefox */
  -ms-user-select: none; /* IE10+/Edge */
}

div {
  width: 100px;
  height: 100px;
  position: absolute;

  margin: 0;
  padding: 0;

  /*  display: inline-block;*/
  background-color: inherit;
  border-radius: 500px;

  text-align: center;
  line-height: 100px;
  font-size: 14px;

  /*box-sizing: border-box; /* dimensions inlcude padding and border */
  cursor: crosshair;
}

#curtain {
  width: 100%;
  height: 100%;
  border-radius: 0px;
  cursor: default;
  z-index: 9;
  background-color: rgba(255, 100, 100, 0);
  display: none;
}

#backdrop {
  width: 100%;
  height: 100%;
  border-radius: 0px;
  cursor: default;
  z-index: 9;
  background-color: rgba(255, 100, 100, 0.4);
  visibility: visible;
  display: none;
}

/* Floor */
/*-------------------------------------------*/
body > .shelf {
  top: 50%;
  left: 50%;

  z-index: 0;
}

/*body > .xShelf > .node {*/
#enter {
  margin: -50px 0 0 -50px;
  background-color: #fff;
}
#enter > span {
  color: #ddd;
  font-size: 11px;
}
.ring {
  width: 104px;
  height: 104px;
  margin: -5px 0 0 -5px;
  background-color: rgba(0, 0, 0, 0);
  border: solid 3px #fff;
  top: 0;
  left: 0;
  display: block;
}
.redRing {
  border-color: rgba(255, 0, 0, 0.8);
  display: none;
}

/* Shelves */
/*-------------------------------------------*/
.shelf {
  background-color: #000;
  outline: solid 2px #555;
  overflow: visible !important;
}

.xShelf {
  width: 0px;
  margin-left: 0px;
  padding-left: 0px;

  height: 4px;
  margin-top: -4px;
  padding-top: 4px;
}

.yShelf {
  width: 4px;
  margin-left: -4px;
  padding-left: 4px;

  height: 0px;
  margin-top: 0px;
  padding-top: 0px;
}

.shelf > .shelf > .node {
  margin: -50px 0 0 -50px;
  cursor: pointer;
}

/*  z-index: */
.shelf > div:nth-of-type(1) {
  z-index: 1;
}
.shelf > div:nth-of-type(2) {
  z-index: 2;
}
.shelf > div:nth-of-type(3) {
  z-index: 3;
}
.shelf > div:nth-of-type(4) {
  z-index: 2;
}
.shelf > div:nth-of-type(5) {
  z-index: 1;
}

/*  x-pos */
.xShelf > div:nth-of-type(1) {
  left: 0%;
}
.xShelf > div:nth-of-type(2) {
  left: 25%;
}
.xShelf > div:nth-of-type(3) {
  left: 50%;
}
.xShelf > div:nth-of-type(4) {
  left: 75%;
}
.xShelf > div:nth-of-type(5) {
  left: 100%;
}

/*  y-pos */
.yShelf > div.node:nth-of-type(1) {
  top: 0%;
}
.yShelf > div.node:nth-of-type(3) {
  top: 50%;
}
.yShelf > div.node:nth-of-type(4) {
  top: 100%;
}

/*  colors  */
/*red*/
#artShelf > div {
  background-color: rgba(150, 100, 100, 1);
}
#artShelf > div:hover {
  background-color: rgba(250, 60, 60, 1);
}
/*green*/
#appShelf > div {
  background-color: rgba(100, 150, 100, 1);
}
#appShelf > div:hover {
  background-color: rgba(60, 210, 60, 1);
}
/*blue*/
#websitesShelf > div {
  background-color: rgba(100, 100, 150, 1);
}
#websitesShelf > div:hover {
  background-color: rgba(70, 115, 255, 1);
}
/*yellow*/
#aboutShelf > div {
  background-color: rgba(140, 140, 80, 1);
}
#aboutShelf > div:hover {
  background-color: rgba(210, 210, 60, 1);
}

.dropdown {
  display: none;
}