*{
  margin: 0;
  padding: 0;
}

body {
    font-family: arial;
    background-color: white;}
nav{
  width: 100%;
  height: 100px;
  background-color: #eee;
  display: flex;
  justify-content: center;
}
ul {

}
ul li{
  list-style: none;
  display: inline-block;
  float: left;
  line-height: 100px;
}
ul li a{
  display: block;
  text-decoration: none;
  font-size: 20px;
  font-family: arial;
  color: #1e1e1e;
  padding: 0 20px;
}
section{
  display: flex;
  flex-wrap: wrap;
  flex-flow: row;
  justify-content: center;
}