* {
  font-family: Verdana, Geneva, Tahoma, sans-serif;
}

html, body {
  margin: 5px;
  border: 0;
  padding: 0;
  background-color: white; 
  color: dimgray; 
}

main {
  margin: auto;
  width: 50%;
  padding: 20px;
}

main > h1 {
  text-align: center;
  font-size: 3.0em; 
}

.imageCenter
{
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;  
}

.row {
  display: flex;
  margin: auto;   
}

.column {
  flex: 50%;
  padding: 5px;
}

h1,h2,h3 {
 color: rgb(31,133,41); 
}

h4{
  color: dimgray;
}