::selection {
  background: transparent;
}
p {
  margin: 0;
  font: 12px/150% Arial;
  text-align: center;
  color: #888;
}
p a {
  color: #888;
}

#controls {
  text-align: center;
}
#controls button {
  cursor: pointer;
  outline: none;
  padding: 10px 20px;
  margin: 25px 2px;
  border: 0;
  border-radius: 4px;
  background: #232266;
  font: bold 14px Arial;
  text-align: center;
  text-transform: uppercase;
  text-shadow: -1px -1px 0 rgba(0, 0, 0, 0.5);
  color: #fff;
}
#controls button:hover {
  background: #1f1f93;
}

#puzzle {
  position: relative;
  width: 320px;
  height: 320px;
  /* margin: 0 auto;
  margin-top: 125px; */
  border: 10px solid #657cf0;
  border-radius: 4px;
}
#puzzle span {
  position: absolute;
  display: block;
  width: 70px;
  height: 70px;
  border-radius: 4px;
  margin-left: 5px;
  margin-top: 5px;
}
#puzzle span.number {
  cursor: pointer;
  font: bold 36px/80px Arial;
  text-align: center;
  text-shadow: 4px 3px 0 rgba(255, 255, 255, 0.24);
  color: #fff;
}
#puzzle span.empty {
  background: transparent;
}
#puzzle span.number.light {
  background: #a7007d;
}
#puzzle span.number.dark {
  background: #657cf0;
}

#puzzle.animate span {
  -webkit-transition: 0.15s left, 0.15s top;
  transition: 0.15s left, 0.15s top;
}

.cursor-pointer {
  cursor: pointer;
}

.sidebar {
  background-color: #1f2830;
  width: 80px;
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  padding: 10px;
}

.sidebar h1 {
  color: black;
}

.rettangoli-container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

.rettangoli {
  font-size: 30px;
  padding: 20px 0;
}

.portfolio {
  background: url("back.webp") no-repeat scroll top transparent;
  background-size: contain;
  background-position: center center;
  background-color: #000;
  position: absolute;
  top: 0;
  left: 100px;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;

  -moz-transition: left 0.5s ease;
  transition: left 0.5s ease;
}

.fa-bars {
  color: #fff;
  cursor: pointer;
}

input[type="checkbox"] {
  display: none;
}

input:checked ~ .portfolio {
  left: 0;
}

input:checked ~ label {
  left: 0;
}

label {
  z-index: 2;
  position: absolute;
  top: 0;
  left: 100px;
  -moz-transition: left 0.5s ease;
  transition: left 0.5s ease;
}

li {
  margin-left: 10px;
  margin-top: 5px;
}

/* .rettangoli {
	border-bottom: 1px solid white;
	//background-color: black;
}

.rettangoli-up {
	border-top: 1px solid white;
} */

a,
a:visited,
a:active,
a:focus,
a:hover {
  text-decoration: none;
  color: white;
}

.title {
  font-size: 35px;
  padding: 5px;
  color: white;
}