html.locked, body.locked {
	overflow: hidden;
  }

.btn {
	padding: 6px 12px;
    border: 0;
    background: #0049a0;
    color: #fff;
    text-transform: uppercase;
}

.exercise, #exercise {
	height: 830px;
	background: #b4dcd3;
}

.config-box {
	margin-bottom: 15px;
}

.set-level {
	width: 80px;
    height: 60px;
    background-image: url(../images/a1/icon_uroven1_2x.png);
    background-repeat: no-repeat;
    background-position: center center;
    background-size: 80px 60px;
}
.set-level#s-a {
	background-image: url(../images/a1/icon_uroven1_2x.png);
  }
  .set-level#s-b {
	background-image: url(../images/a1/icon_uroven2_2x.png);
  }
  .set-level#s-c {
	background-image: url(../images/a1/icon_uroven3_2x.png);
  }

.set-level a {
	display: block;
	float: left;
	width: 33.333%;
	height: 100%;
  }

.lock-container {
	text-align: left;
}

/* mode box */
.mode.chosen {
	color: #0049a0;
  }
  .mode {
	position: relative;
	top: -10px;
	display: inline-block;
	font-weight: 700;
	font-family: "Bungee", Georgia, cursive;
  }
  .mode-box {
	display: inline-block;
	width: 70px;
	height: 40px;
	margin: 0 10px;
	padding: 5px;
	background: #0049a0;
	border-radius: 20px;
  }
  .mode-box span {
	display: inline-block;
	width: 30px;
	height: 30px;
	border-radius: 30px;
	background: #fff;
	transform: translateX(30px);
	transition: all 0.3s;
	-moz-transition: all 0.3s; /* Firefox 4 */
	-webkit-transition: all 0.3s; /* Safari and Chrome */
	-o-transition: all 0.3s; /* Opera */
  }
  .mode-box.on span {
	transform: translateX(0);
  }

/* ---------------- */
/* --- EXAMPLE --- */
/* -------------- */
.example {
	padding-top: 45px;
	margin: 0 0 30px;
	visibility: hidden;
}
.example.is-shown {
	visibility: visible;
}
.example-term {
	min-width: 50px;
	display: inline-block;
	padding: 5px;
	font-weight: 500;
	font-family: "Bungee", Georgia, cursive;
	color: #0049a0;
	font-size: 42px;
	line-height: 42px;
	vertical-align: top;
}
#exampleResult {
	min-height: 52px;
	border: 1px dashed #0049a0;
}
.init-btn-wrap {
	position: absolute;
	left: 50%;
	top: 50%;
	z-index: 7;
	margin-left: -65px;
	margin-top: 30px;
	visibility: hidden;
}
.init-btn-wrap.is-active {
	visibility: visible;
}
.stack {
	position: relative;
	min-height: 42px;
	margin-bottom: 30px;
}
.stack.is-disabled:before {
	content: "";
	position: absolute;
	left: 0;
	top: 0;
	z-index: 7;
	width: 100%;
	height: 100%;
}
.stack-item {
	display: inline-block;
	padding: 10px;
	border: 1px dashed #aaa9a5;
	margin: 0 5px;
	font-weight: 500;
	font-family: "Bungee", Georgia, cursive;
	font-size: 27px;
	color: #0049a0;
	cursor: pointer;
}
.stack-item.is-selected {
	background: rgba(255,255,255,.2);
}
.set-boxes {
	display: inline-block;
	width: 80px;
	height: 60px;
	background-repeat: no-repeat;
	background-position: center;
	background-size: 80px 60px;
}
.set-boxes--2 {
	background-image: url(../images/a17/2-inactive_2x.png);
}
.set-boxes--2.is-active {
	background-image: url(../images/a17/2-active_2x.png);
}
.set-boxes--3 {
	background-image: url(../images/a17/3-inactive_2x.png);
}
.set-boxes--3.is-active {
	background-image: url(../images/a17/3-active_2x.png);
}

.set-color {
	display: inline-block;
	width: 60px;
	height: 60px;
	background-repeat: no-repeat;
	background-position: center;
	background-size: 60px 60px;
}
.set-color--1 {
	background-image: url(../images/a17/1c_inactive_2x.png);
}
.set-color--1.is-active {
	background-image: url(../images/a17/1c_active_2x.png);
}
.set-color--2 {
	background-image: url(../images/a17/2c_inactive_2x.png);
}
.set-color--2.is-active {
	background-image: url(../images/a17/2c_active_2x.png);
}
.set-color--rand {
	background-image: url(../images/a17/Xc_inactive_2x.png);
}
.set-color--rand.is-active {
	background-image: url(../images/a17/Xc_active_2x.png);
}

.success-wrap {
	position: absolute;
	left: 50%;
	top: 50%;
	z-index: 7;
	display: none;
	margin-left: -125px;
	margin-top: -125px;
}