body {
  background: url('wood_texture.png');
  margin: 0;
  overflow: hidden;
}
.buttons {
  position: absolute;
  top: 10px;
  left: 12px;
}
.button {
  background-color: rgba(255,255,255,0.2);
  margin-right: 10px;
  border-radius: 100%;
  border: 3px solid rgba(255,255,255,0.2);
  height: 30px;
  width: 30px;
  display: inline-block;
  cursor: pointer;
  color: #dcb;
  text-align: center;
  line-height: 26px;
  user-select: none;
  font-size: 30px;
  transition: background-color .3s;
}
.button:hover {
  background-color: rgba(255,255,255,0.1);
  transition: background-color .3s;
}
.less {
  position: relative;
  top: 2px;
  line-height: 25px;
  font-size: 40px;
}
#boards {
  font-size: 0px;
}
.board-row {
  display: inline-block;
  white-space: nowrap;
}
.board {
  display: inline-block;
}