* {
	box-sizing: border-box;
	padding: 0;
	margin: 0;
}
body {
	font-size: 100%;
	font-weight: 300;
	color: #888;
	width: 100%;
}
a:link {
	text-decoration: none;
}
a:visited {
	text-decoration: none;
}
a:hover {
	text-decoration: none;
}
a:active {
	text-decoration: none;
}
img {
	max-width: 100%;
}
.container {
	width: 1000px;
	display: block;
	text-align: center;
	background: #FFF;
}
section {
	width: 1000px;
	margin: 0 auto;
	background: #FFF;
}

.column {
	display: inline-block;
	width: 80%;
	margin: 2% auto;
	vertical-align: top;
	text-align: left;
}
.column.image_left {
	height: 622px;
	background: url(../../images/Cover-pages/30.png);
	
	background-repeat: no-repeat;
	width: 450px;
}
.column.image_right {
	height: 622px;
	background: url(../../images/Cover-pages/31.png);
	
	background-repeat: no-repeat;
	width: 450px;
}
.clearfix {
	width: 100%;
	clear: both;
	height: 20px;
}
footer {
	left: 0;
	bottom: 0;
	width: 100%;
	overflow: hidden;
}

.go-to-exercise {
	width: 100%;
	display: inline-block;
	position: relative;
	vertical-align: top;
	

}
.go-to-exercise.regular {
	display: inline-block;
	position: relative;
	vertical-align: top;
}

.right_1 {
height: 205px;
    width: 58%;
	display: inline-block;
	position: relative;
}

.right_2 {
	    height: 206px;
    width: 41%;
	display: inline-block;
	position: relative;
}
.right_3 {
	height: 130px;
    width: 70%;
	display: inline-block;
	position: relative;
}
.right_4 {
	height: 72px;
	width: 29%;
	display: inline-block;
	position: relative;
}

.right_5 {
	height: 102px;
	width: 99%;
	display: inline-block;
	position: relative;
}
.right_6 {
	height: 117px;
	width: 99%;
	display: inline-block;
	position: relative;
}

.right_7 {
	height: 42px;
	width: 99%;
	display: inline-block;
	position: relative;
}
.left_1 {
	height: 215px;
	display: inline-block;
	position: relative;
}
.left_2 {
	height: 70px;
	width: 58%;
	display: inline-block;
	position: relative;
}
.left_3 {
	height: 110px;
	width: 41%;
	display: inline-block;
	position: relative;
}
.left_4 {
	height: 125px;
	width: 57%;
	top: -40px;
	display: inline-block;
	position: relative;
}
.left_5 {
	height: 90px;
	width: 42%;
	display: inline-block;
	position: relative;
}

.left_6{
  height: 134px;
 top: -36px;
}
.left_7{
 height: 44px;
    width: 59%;
	top: -32px;
}
.left_8{
 height: 44px;
    width: 39%;
	top: -32px;
}