* {
  box-sizing: border-box;
}

body {
  font-family: "Times new roman";
  margin: 0;
}


header {
  background-color: #518F55;
  padding: 30px;
  color: white;
  font-size: 40px;

  display: flex;
  align-items: center;     
  justify-content: center; 
  position: relative;      
}

header img {
  position: absolute;
  left: 80px;   
  width: 100px;  
  height: auto;
}


.topnav {
  background-color: #83CC83;
}

.topnav ul {
  list-style: none;
  margin: 0;
  padding: 0;

  display: flex;
  justify-content: space-around;
}

.topnav li {
  flex: 1;               
  text-align: center;
}

.topnav a {
  display: block;        
  padding: 15px 0;
  text-decoration: none;
  color: #2F3B2F;
  font-weight: bold;
  transition: 0.3s;
}


.topnav a:hover {
  background-color: #518F55;
  color: white;
}

html, body {
  height: 100%;
  margin: 0;
}
.content1, .content2, .content3 {
  min-height: 100vh;
}

.content1 a, .content2 a, .content3 a {
  color: #2F3B2F;      
  text-decoration: none;
  font-weight: bold;
}

.content1 a:hover, .content2 a:hover, .content3 a:hover {
  color: #518F55;
	cursor: help;
}

.section {
  margin-top: 0px;
	min-height: 100vh;
}

.foto {
  width: 150px;
  height: auto;
  display: block;
  margin: 40px auto 10px auto;
}

.bron {
  display: block;
  text-align: center;
  margin-top: 10px;
}

.content1 {
  float: left;
  width: 33.33%;
  background-color: #f1f1f1;
  padding: 40px;
}

.content2 {
  float: left;
  width: 33.34%;
  background-color: #DDF3DD;
  padding: 40px;
}

.content3 {
  float: left;
  width: 33.33%;
  background-color: #f1f1f1;
  padding: 40px;
}


.section::after {
  content: "";
  display: table;
  clear: both;
}