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

body {
  font-size: 100%;
  font-weight: 300;
  color: #888;
  width: 100%;
}

img {
  max-width: 100%;
}

nav {
  border: 0;
  -o-transition: all 0.3s;
  -moz-transition: all 0.3s;
  -webkit-transition: all 0.3s;
  -ms-transition: all 0.3s;
  transition: all 0.3s;
  text-align: left;
  margin-left: 30px;
}

header {
  display: block;
  background-image: url(../../images/ebook-banner/lecon_2.png);
  background-repeat: no-repeat;
  background-position: center;
  width: 100%;
  height: 203px;
}

.small-grid .pencil {
  background-image: url(../../images/pencil.png);
  background-repeat: no-repeat;
  background-position: center;
  background-size: 70%;
  height: 40px;
  width: 40px;
  margin: 10px 0 0 5px;
}

.small-grid .puzzle {
  background-image: url(../../images/puzzle.png);
  background-repeat: no-repeat;
  background-position: center;
  background-size: 100%;
  height: 40px;
  width: 35px;
  margin: 10px 0 0 5px;
}

.small-grid .recycle {
  background-image: url(../../images/recycle.PNG);
  background-repeat: no-repeat;
  background-position: center;
  background-size: 100%;
  height: 40px;
  width: 35px;
  margin: 10px 0 0 5px;
}

.small-grid .note {
  background-image: url(../../images/note.PNG);
  background-repeat: no-repeat;
  background-position: center;
  background-size: 100%;
  height: 40px;
  width: 35px;
  margin: 10px 0 0 5px;
}

.small-grid .sms {
  background-image: url(../../images/sms.PNG);
  background-repeat: no-repeat;
  background-position: center;
  background-size: 100%;
  height: 40px;
  width: 35px;
  margin: 10px 0 0 5px;
}

.small-grid .sms {
  background-image: url(../../images/people.png);
  background-repeat: no-repeat;
  background-position: center;
  background-size: 100%;
  height: 40px;
  width: 35px;
  margin: 10px 0 0 5px;
}

.small-grid .no_puzzle {
  height: 40px;
  width: 35px;
  margin: 10px 0 0 5px;
}

.small-grid .headphones {
  background-image: url(../../../Unit-02/images/audio/headphones.png);
  background-repeat: no-repeat;
  background-position: center;
  background-size: 100%;
  height: 40px;
  width: 45px;
  margin: 10px 0 0 5px;
  display: none !important;
}

.head_number {
  display: block;
  width: 15px;
  height: 20px;
  color: #000;
  text-align: center;
  position: relative;
  left: 13px;
  font-family: "PFTransport-Regular";
  top: 10px;
  font-weight: 600;
}

.small-grid .cd {
  background-image: url(../../images/cd-9.png);
  background-repeat: no-repeat;
  background-position: center;
  background-size: 100%;
  height: 40px;
  width: 40px;
  margin: 10px 0 0 5px;
}

.small-grid .exer_number {
  margin: 15px 0 0 5px;
}

.number {
  display: block;
  width: 32px;
  height: 32px;
  text-align: center;
  position: relative;
  font-family: "PFCentroSlabPro-Medium";
  font-weight: bold;
  border-radius: 50%;
  line-height: 1.4em;
  background-color: #04b9aa;
  color: #ffff;
  font-size: 23px;
}

.small-grid,
.item-grid {
  width: 90%;
  padding: 0;
  margin: 0;
}

.item-grid li {
  list-style-type: none;
  margin: 0 17px 40px 15px;
  padding: 0;
  display: inline-block;
  *display: inline;
  zoom: 1;
  vertical-align: top;
}

.small-grid li {
  /*border: 1px solid rgba(0, 0, 0, 0.2);*/
  list-style-type: none;
  padding: 0;
  display: inline-block;
  *display: inline;
  zoom: 1;
  vertical-align: top;
}

.small-grid .left {
  margin: 5px -28px 0 -5px;
  height: auto;
  text-align: center;
}

.small-grid .center {
  margin: 20px 0 0 5px;
  height: auto;
}
.small-grid .right {
  margin: 20px 0 0 5px;
  height: auto;
}

/*---------------- header -----------------------*/
.container {
  width: 900px;
  display: block;
  text-align: center;
  background: #fff;
}

section {
  width: 900px;
  margin: 0 auto;
  background: #fff;
}

.prosfonisi>p {
  line-height: 1.3em;
  color: #000;
  font-size: 20px;
  font-weight: normal;
  font-family: "PFCentroSlabPro-Medium";
  text-align: left;
}

/*-------------------title--------------------------*/
.column {
  padding: 0;
  display: inline-block;
  vertical-align: top;
  margin: 2% 0;
  width: 85%;
  text-align: left;
  margin-left: 120px;
}

.myimage {
  background-image: url(../../images/exercises-images/p61_exer1.png);
  background-repeat: no-repeat;
  background-position: bottom center;
  height: 150px;
  width: 94%;
  margin-bottom: 10px;
}


.box {
  display: inline-block;
  margin: 0 auto;
  width: 22%;
  margin-right: 1%;
}

.video_player {
  background-image: url(../../images/video2.png);
  background-repeat: no-repeat;
  display: block;
  position: relative;
  text-align: left;
  width: 110px;
  height: 55px;

  margin: 1% 0 0 8%;
}

span.blue {
  color: #025b94;
  display: block;
  width: 265px;
  font-family: "PFTransport-Regular";
  text-align: left;
  position: relative;
  /* height: 40px; */

  line-height: 2.5em;
  font-size: 22px;
  padding: 1px;
  margin-left: 42px;
}

.clearfix {
  width: 100%;
  clear: both;
  height: 20px;
}

.drag-grid {
  font-family: "PFEarthbound-Regular";
  display: block;
  text-align: center;
  height: 50px;
  margin: 15px auto 0 auto;
  padding: 0;
  background: #cae8dd;
  border-top: 2px #cae8dd solid;
  border-bottom: 2px #cae8dd solid;
  width: 65%;
}

.drag-grid li {
  list-style-type: none;
  margin: 7px 5px 0 5px;
  padding: 0;
  display: inline-block;
  *display: inline;
  zoom: 1;
  vertical-align: top;
  cursor: all-scroll;
  z-index: 1;
}

.drag-grid li {
  /* background-color: #6FC696; */
  width: auto;
  padding: 3px;
  height: auto;
  font-size: 18px;
  color: #000;
}

label {
  top: 0;
  color: #000;

  display: inline-block;
  font-family: "PFTransport-Regular";
  padding: 1px;
  text-align: left;
  line-height: 1.8em;
}

.greyspan {
  width: 100px;
  display: inline-block;
  color: #999;
  text-align: right;
}

.input2 {
  width: 110px;
  text-align: left;
  font-family: "PFTransport-Regular";
  border: none;
  position: relative;
  border-bottom: 1px dashed #000;
  font-size: 16px;
  background: none;
  padding: 0;
  top: 0;
  left: 0;
  margin: 0;
}

.input1 {
  width: 85%;
  float: right;
  text-align: center;
  font-family: "PFTransport-Regular";
  border: none;
  position: relative;
  border-bottom: 1px dashed #000;
  font-size: 17px;
  background: none;
  padding: 0;
  top: 0;
  left: 0;
  margin: 0;
  color: #3d7dbb;
}

.input3 {
  width: 140px;
  text-align: left;
  font-family: "PFTransport-Regular";
  border: none;
  position: relative;
  border-bottom: 1px dashed #000;
  font-size: 17px;
  background: none;
  padding: 0;
  top: 0;
  left: 0;
  margin: 0;
}

footer {
  left: 0;
  bottom: 0;

  width: 100%;
  overflow: hidden;
}

label.btn span {
  font-size: 1.4em;
  margin: 5px;
  padding: 4px;
}

.fa-2x {
  font-size: 1.5em !important;
}

label input[type="radio"]~i.fa.fa-circle-o {
  color: #c8c8c8;
  display: inline;
}

label input[type="radio"]~i.fa.fa-dot-circle-o {
  display: none;
}

label input[type="radio"]:checked~i.fa.fa-circle-o {
  display: none;
}

label input[type="radio"]:checked~i.fa.fa-dot-circle-o {
  color: #7aa3cc;
  display: inline;
}

label:hover input[type="radio"]~i.fa {
  color: #7aa3cc;
}

label input[type="checkbox"]~i.fa.fa-square-o {
  color: #000;
  display: inline;
}

label input[type="checkbox"]~i.fa.fa-check-square-o {
  display: none;
}

label input[type="checkbox"]:checked~i.fa.fa-square-o {
  display: none;
}

label input[type="checkbox"]:checked~i.fa.fa-check-square-o {
  color: #00aeef;
  display: inline;
}

label:hover input[type="checkbox"]~i.fa {
  color: #00aeef;
}

div[data-toggle="buttons"] label.active {
  color: #000;
}

div[data-toggle="buttons"] label {
  display: inline-block;
  padding: 10px 5px;
  margin-bottom: 0;
  font-size: 14px;
  font-weight: normal;
  /*  line-height: 2em;*/
  text-align: left;
  white-space: nowrap;
  vertical-align: top;
  cursor: pointer;
  background-color: none;
  border: 0px solid #fff;
  border-radius: 3px;
  /*color: #c8c8c8;*/
  color: #000;

  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  -o-user-select: none;
  user-select: none;
  text-shadow: none;
}

div[data-toggle="buttons"] label:hover {
  color: #000;
  text-shadow: 0 0 9px #fff;
}

div[data-toggle="buttons"] label:active,
div[data-toggle="buttons"] label.active {
  -webkit-box-shadow: none;
  box-shadow: none;
}

.btn-group,
.btn-group-vertical {
  position: relative;
  display: inline-block;
  vertical-align: middle;
  padding: 0;
}

.btn-group>.btn,
.btn-group-vertical>.btn {
  position: relative;
  float: left;
}

.btn-group>.btn:hover,
.btn-group-vertical>.btn:hover,
.btn-group>.btn:focus,
.btn-group-vertical>.btn:focus,
.btn-group>.btn:active,
.btn-group-vertical>.btn:active,
.btn-group>.btn.active,
.btn-group-vertical>.btn.active {
  z-index: 2;
}

.btn-group-vertical>.btn,
.btn-group-vertical>.btn-group,
.btn-group-vertical>.btn-group>.btn {
  display: block;
  float: none;
  width: 100%;
  max-width: 100%;
}

.btn-group-vertical>.btn-group>.btn {
  float: none;
}

.btn-group-vertical>.btn:not(:first-child):not(:last-child) {
  border-radius: 0;
}

.btn-group-vertical>.btn:first-child:not(:last-child) {
  border-top-right-radius: 4px;
  border-bottom-right-radius: 0;
  border-bottom-left-radius: 0;
}

.btn-group-vertical>.btn:last-child:not(:first-child) {
  border-bottom-left-radius: 4px;
  border-top-right-radius: 0;
  border-top-left-radius: 0;
}

.btn-group-vertical>.btn-group:not(:first-child):not(:last-child)>.btn {
  border-radius: 0;
}

.btn-group-vertical>.btn-group:first-child:not(:last-child)>.btn:last-child,
.btn-group-vertical>.btn-group:first-child:not(:last-child)>.dropdown-toggle {
  border-bottom-right-radius: 0;
  border-bottom-left-radius: 0;
}

.btn-group-vertical>.btn-group:last-child:not(:first-child)>.btn:first-child {
  border-top-right-radius: 0;
  border-top-left-radius: 0;
}

[data-toggle="buttons"]>.btn>input[type="radio"],
[data-toggle="buttons"]>.btn>input[type="checkbox"] {
  display: none;
}

@media only screen and (max-width: 13000px) {
  .column {
    /* width:350px;*/
  }
}

@media only screen and (max-width: 1000px) {
  .column {
    /*   width:250px;*/
  }
}

span.colored {
  color: #04b9aa;
  display: inline-block;
  width: 20px;
  font-family: "PFTransport-Regular";
}

.left-al {
  width: 100%;
}

.flex-1 {
  display: flex;
  flex-direction: row;
  align-items: center;
  margin-left: 8em;
}

.flex-img {
  width: 500px;
}
/*-------keyboard-----------------------*/

* {
	margin: 0;
	padding: 0;
	position: relative;
  }
  
  .toggle,
  .toggler {
	display: inline-block;
	vertical-align: top;
	margin: 2% auto auto 10px;
  }
  
  .toggler {
	color: slategray;
	transition: 0.2s;
  }
  
  .toggler--is-noactive {
	background: url(../../../assets/images/off.png);
	-webkit-background-size: cover;
	-moz-background-size: cover;
	-o-background-size: cover;
	background-size: cover;
	background-size: 100%;
	background-repeat: no-repeat;
	width: 40px;
	height: 25px;
  }
  
  .toggler--is-active {
	color: black;
	background: url(../../../assets/images/on.png);
	-webkit-background-size: cover;
	-moz-background-size: cover;
	-o-background-size: cover;
	background-size: cover;
	background-size: 100%;
	background-repeat: no-repeat;
	width: 40px;
	height: 25px;
  }
  
  .b {
	display: block;
  }
  
  .toggle {
	width: 45px;
	height: 25px;
	border-radius: 100px;
	background-color: #ccc;
	overflow: hidden;
	box-shadow: inset 0 0 2px 1px rgba(0, 0, 0, 0.05);
  }
  
  .cc {
	width: 45px;
	height: 25px;
	border-radius: 100px;
	background-color: #2ecc71;
	overflow: hidden;
	box-shadow: inset 0 0 2px 1px rgba(0, 0, 0, 0.05);
  }
  
  .check {
	position: absolute;
	display: block;
	cursor: pointer;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	opacity: 0;
	z-index: 6;
  }
  
  .check:checked ~ .switch {
	right: 2px;
	left: 37.5%;
	transition: 0.25s cubic-bezier(0.785, 0.135, 0.15, 0.86);
	transition-property: left, right;
	transition-delay: 0.08s, 0s;
  }
  
  .switch {
	position: absolute;
	left: 2px;
	top: 2px;
	bottom: 2px;
	right: 37.5%;
	background-color: #fff;
	border-radius: 36px;
	z-index: 1;
	transition: 0.25s cubic-bezier(0.785, 0.135, 0.15, 0.86);
	transition-property: left, right;
	transition-delay: 0s, 0.08s;
	box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
  }
  
  /*-------keyboard end-----------------------*/