main.css

ul {
  list-style: none;
}

.card{ 
	border: 1px solid red;
}

/*body { 
  margin:0;
  padding:0;
  background-color: #ecf0f1;
  font-family: opensans;
}

header {
	background-color: #e74c3c;
	padding: 20px;
	position: fixed;
	width: 100%;
	top: 0;
}

h1 {	
	margin:0;
	text-align: center;
}

h2 {
	text-align: center;
	padding: 10px;
}

p {
	text-align: justify;
}

img {
	margin: 0 auto;
	display: block;
	width: 100%;
}

a {
	color: #e74c3c;
}

span {
	font-style: italic;
}

#conteudo {
  width: 1140px auto;
  margin: 120px auto;
}



.figura-importante {
	width: 23%;
	padding: 20px;
	display: inline-block;
	box-sizing: border-box;
	background-color: white;
	margin: 10px;
}

footer {
	background-color: #1abc9c;
	padding: 10px;
	width: 100%;
}*/