@import 'https://fonts.googleapis.com/css?family=Open+Sans';

* {
	-webkit-box-sizing: border-box;
	box-sizing: border-box;
}

body {
	font-family: 'Open Sans', sans-serif;
	line-height: 1.75em;
	font-size: 16px;
	background-color: #222;
	color: #aaa;
}

<!-- HTML !-->
<button class="button-5" role="button">Button 5</button>


.button-5 {
  align-items: center;
  background-clip: padding-box;
  background-color: #fa6400;
  border: 1px solid transparent;
  border-radius: .25rem;
  box-shadow: rgba(0, 0, 0, 0.02) 0 1px 3px 0;
  box-sizing: border-box;
  color: #fff;
  cursor: pointer;
  display: inline-flex;
  font-family: system-ui,-apple-system,system-ui,"Helvetica Neue",Helvetica,Arial,sans-serif;
  font-size: 16px;
  font-weight: 600;
  justify-content: center;
  line-height: 1.25;
  margin: 0;
  min-height: 3rem;
  padding: calc(.875rem - 1px) calc(1.5rem - 1px);
  position: relative;
  text-decoration: none;
  transition: all 250ms;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  vertical-align: baseline;
  width: auto;
}

.button-5:hover,
.button-5:focus {
  background-color: #fb8332;
  box-shadow: rgba(0, 0, 0, 0.1) 0 4px 12px;
}

.button-5:hover {
  transform: translateY(-1px);
}

.button-5:active {
  background-color: #c85000;
  box-shadow: rgba(0, 0, 0, .06) 0 2px 4px;
  transform: translateY(0);
}


.simple-container {
	max-width: 675px;
	margin: 0 auto;
	padding-top: 70px;
	padding-bottom: 20px;
}

.simple-print {
	fill: white;
	stroke: white;
}
.simple-print svg {
	height: 100%;
}

.simple-close {
	color: white;
	border-color: white;
}

.simple-ext-info {
	border-top: 1px solid #aaa;
}

p {
	font-size: 18px;
}

h1 {
	font-size: 30px;
	line-height: 34px;
	color: #fb8332
}

h2 {
	font-size: 20px;
	line-height: 25px;
}

h3 {
	font-size: 18px;
	font-weight: bold;
	line-height: 27px;
	padding-top: 15px;
	padding-bottom: 15px;
	border-bottom: 1px solid #D8D8D8;
	border-top: 1px solid #D8D8D8;
}

hr {
	height: 1px;
	background-color: #d8d8d8;
	border: none;
	width: 100%;
	margin: 0px;
}

a[href] {
	color: #1e8ad6;
}

a[href]:hover {
	color: #3ba0e6;
}

img {
	max-width: 100%;
}

li {
	line-height: 1.5em;
}

aside,
[class *= "sidebar"],
[id *= "sidebar"] {
	max-width: 90%;
	margin: 0 auto;
	border: 1px solid lightgrey;
	padding: 5px 15px;
}

@media (min-width: 1921px) {
	body {
		font-size: 18px;
	}
}