*, *:before, *:after {
	box-sizing: border-box;
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box; 
}

/* <!-- Bootstrap */
.container {
  width: 100%;
  padding-right: 15px;
  padding-left: 15px;
  margin-right: auto;
  margin-left: auto;
  /*margin-bottom: 30px;*/
}

.row {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  margin-right: -15px;
  margin-left: -15px;
}

.col-sm-12, .col-md-745-1000, .col-md-255-1000 {
	  position: relative;
	  width: 100%;
	  padding-right: 15px;
	  padding-left: 15px;
}

/* Medium Devices, Desktops */
@media only screen and (min-width : 992px) {	
	.container {
		width: 1000px;
	}
	
	.col-md-255-1000, .col-md-push-255-1000 {
		width: 255px;
	}
	
	.col-md-745-1000, .col-md-pull-745-1000 {
		width: 745px;
	}
	
	.col-md-pull-745-1000 {
		right: 25.5%;
	}
	
	.col-md-push-255-1000 {
		left: 74.5%;
	}
}
/* Bootstrap --> */

/* <!-- Menu */
.menu-trigger {
	padding: 10px 15px;
	color: #305782;
	background: #283744;
	display: none;
	cursor: pointer;
}

.nav-menu a {
	width: auto;
	padding-left: 0px;
	color: #000;
	line-height: 23px;
	display: inline-block;
	text-decoration: none;
	text-transform: none;
}

.nav-menu ul {
	margin: 0 0 0 -20px;
	list-style-type: disc;
	list-style-position: outside;
}

@media only screen and (max-width : 991px) {
	.menu-trigger {
		display: block;
	}
	.nav-menu {
		display: none;
	}
	.nav-expanded {
		display: block;
	}	
	.nav-menu ul li {
		float: none;
		border-bottom: 1px solid #576979;
	}
	.nav-menu ul {
		margin: 0;
		padding-left: 0px;
		color: white;
		background-color: #375D81;
		list-style-type:none;
	}
	.nav-menu ul li {
		padding: 10px 0 10px 15px;
	}
	.nav-menu ul li:hover {
		background-color: #576979;
	}
	.nav-menu ul li a {
		color: white;
		font-weight: bold;
		text-transform: uppercase;
	}
}

.clearfix:before, .clearfix:after {
	content: "";
	display: table;
}
.clearfix:after {
	clear: both;
}
.clearfix:after {
	*: zoom: 1;
}

.bar1, .bar2, .bar3 {
	margin: 4px 0;
	width: 25px;
	height: 4px;
	background-color: #fff;
	transition: 0.4s;
}

@media only screen and (min-width : 992px) {
	.nav-menu a {
		padding-left: 10px;
	}
}
/* Menu --> */

body {
	margin: 0;
	background-color: #E1E6FA;
	font-family: Lucida, "Trebuchet MS", Arial, Helvetica;
	font-size: 16px;
}

h1, h2, h3, h4, h5, h6 {
    font-size: 16px;
}

hr {
	height: 1px;
	margin: 30px 0;
	background: black;
	font-size: 0;
    border: 0;
	color: black;
}

#header-area {
	background-color: #375D81;
	width: 100%;
	margin-bottom: 0px;
	background: url('../../assets/images/header.jpg') repeat-x scroll 0% 0% #375D81;
}

#footer-area {
	background-color: #375D81;
	width: 100%;
	margin-top: 0px;
}

#header-left, #header-right {
	height: 100px;
}

#footer-left, #footer-right {
	padding: 60px 15px;
}

#header-right, #footer-right {
	display: none;
}

#col-content {
	background-color: white;
	padding-bottom: 30px;
}

#col-navigation {
	background-color: pink;
	padding-right: 0px;
	padding-left: 0px;
}

ul#header_navigation_links {
	list-style-type: none;
	background-color: #dddddd;
	padding: 0px;
	margin-top: 55px;
}

ul#header_navigation_links li {
    margin-left: 0px;
	margin-right: 25px;
    font-size: 20px;
    text-transform: uppercase;
    /*display: inline-block;*/
	float: left;
}

ul#header_navigation_links li a {
	color: white;
	text-decoration: none;
	display: block;
}

#col-navigation h3 {
	display: none;
}

#header_logo {
	width: 314px;
	margin-top: 27px;
	margin-left: 0px;
	display: block;
	float: left;
}

#footer-left ul {
  margin: 15px 0px 30px;
  padding: 0px;
  list-style: outside none none;
  vertical-align: top;
  display: block;
}

#footer-left li {
  font-size: 18px;
  font-family: Berlin Sans FB,Arial;
  color: #FFF;
  line-height: 200%;
}

.footer_links {
  width: 250px;
  float: left;
}

.footer_links a {
	color: #FFF;
	text-decoration: none;
}


#post_title {
  margin-top: 30px;
  text-align: center;
  word-wrap: break-word;
  font-size: 24px;
  color: #000;
}

#box_calculator {
  margin: 0px auto 45px;
  width: 334px;
  /*height: 280px;*/
  background-color: white;
}

#result {
  width: 100%;
  margin-top: 25px;
  margin-bottom: 35px;
}

button {
  min-height: 25px;
}

input {
  width: 48px;
}

input[type=number] {
  -moz-appearance: textfield;
}

input[type=number]::-webkit-outer-spin-button,
input[type=number]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.clear {
  clear: both;
}

#controls_wide {
  width: 334px;
  margin-top: -30px;
  margin-bottom: 20px;
  text-align: center;
  float: left;
}

#controls_middle {
  padding: 0px 0px;
  height: 175px;
  margin-top: 25px;
  text-align: center;
  float: left;
}

.controls_side {
  width: 165px;
  height: 175px;
  margin-top: 20px;
  text-align: center;
  float: left;
}

.calculator {
  width: 334px;
  margin: 0px auto 20px;
  padding: 15px 0px;
  background-color: pink;
  background-color: #C4D7ED;
}

#table_controls {
  margin: 0px auto;
  background-color: #C4D7ED;
}

#table_controls td.td_num {
  border-bottom: 2px solid black;
  padding-bottom: 3px;
}

#button_compute {
  padding-left: 15px;
  padding-right: 15px;
}

.button_input_left {
  min-width: 150px;
  margin-bottom: 15px;
  margin-left: 0px;
  float: left;
}

.button_input_right {
  min-width: 150px;
  margin-bottom: 15px;
  margin-right: 0px;
  float: right;
}

.table_expr {
  height: 56px;
  height: 40px;
}

td.operator_cell {
  width: 0px;
  padding: 0px 0px;
  vertical-align: middle;
  text-align: center;
  background-color: white;
}

td.operator_cell.equality {
  width: 18px;
}

td.operator_cell.additive {
  padding: 0px 5px;
}

td.operator_cell.multiplicative {
  padding: 0px 1px;
}

td.operator_cell.bracket {
  padding: 0px 0px;
}

td.operator_cell.word {
  padding: 0px 15px;
}

td.operator_cell.misc {
  width: auto;
  padding: 0px 5px;
}

td.whole_cell {
  padding-right: 0px;
  vertical-align: middle;
  text-align: center;
  background-color: white;
}

td.numerator_cell {
  padding-bottom: 3px;
  border-bottom: 2px solid #000;
  line-height: 18px;
  text-align: center;
  background-color: white;
}

td.denominator_cell {
  line-height: 18px;
  text-align: center;
  background-color: white;
}

#wrap-gebruik {
	margin-bottom: 30px;
}

#wrap-article {
	margin-top: 30px;
	margin-bottom: 30px;
}

.wrap-image_1, .wrap-image_2, .wrap-image_3 {
	width: 150px;
	font-size:80%;
	text-align:center;
	float: left;
}

.wrap-images {
	width: 150px;
	margin-left: auto;
	margin-right: auto;
}

.wrap-image_1, .wrap-image_2, .wrap-image_3{
	margin: 10px 0px 15px 0px;
}

@media only screen and (min-width : 560px) {
	.wrap-images {
		width: 530px;
		margin-left: auto;
		margin-right: auto;
	}

	.wrap-image_1, .wrap-image_2{
		margin-right: 40px;
	}
}

/* Medium Devices, Desktops */
@media only screen and (min-width : 992px) {
	#header-area {
		margin-bottom: 35px;
	}

	#footer-area {	
		margin-top: 35px;
	}
	
	#header-right, #footer-right {
		display: block;
	}
	
	#col-navigation {
		padding-left: 15px;
		background-color: #E1E6FA;
	}
	
	#col-navigation h3 {
		min-height: 30px;
		margin-top: 0px;
		margin-left: 10px;
		padding: 6px 0px 4px 10px;
		display: block;
		font-size: 24px;
		color: #FFF;
		background-color: #375D81;
	}
	
	#col-content {
		border: 15px solid #C4D7ED;
		padding-top: 15px;
		padding-left: 30px;
		padding-right: 30px;
	}

	#header-left {
		height: 120px;
	}
	
	#header_logo {
		margin-top: 37px;
		margin-left: 10px;
	}
	
	#footer-left ul {
		padding-left: 15px;
	}
	
	#post_title {
		margin-top: 5px;
	}
	
	#wrap-article {
		margin-bottom: 0px;
	}
}