body {
    font-family: Helvetica, sans-serif;
    line-height: 1.5;
    margin: 20px;
}

.topnav {
    margin-top: 10px ;
    margin-bottom: 10px;
    padding: 5px;
    font-size: 18px;
    border-top: 2px solid black;
    border-bottom: 2px solid black;
}

.topnav ul {
    text-align: center;
    padding: 0;
    display: flex;
    justify-content: space-between;
    list-style-type: none;
}


.topnav li a {
    padding: 5px;
    color: #156315;
    font-size: 18px;
    text-decoration: none;
}

.topnav li a:hover {
    color: #1f931f;
}

.topnav .icon {
    display: none;
}

@media screen and (max-width: 700px) {
    .topnav ul{
	display: block;
	list-style-type: none;
	padding: 0;
	text-align: left;
    }
    .topnav li{
	margin: 5px 0;
    }
}


* {
  box-sizing: border-box;
}

.img-container {
  float: right;
  width: 33%;
  padding: 5px;
}

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