@media only screen and (max-width: 648px) {
  body {
    background-color: lightblue; 
 }
 
  .logo1 {
    width: 80px; 
    height: 80px; 
  }

  .logo2 {
    width: 80px; 
    height: 80px; 
  }
}


* {
  box-sizing: border-box; 
}


h1 {
  font-family: Tahoma, Verdana, sans-serif; 
  color: blue; 
  text-align: center;  
}

body {
  background-color: yellow; 
  text-align: center; 
}

footer {
  font-family: sans-serif; 
}

table, th, td {
  border: 1px solid black; 
}

.column {
  float: left; 
  width: 33.33%;
}

.middle {
  width: 50%;
}

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

.topnav {
  position: relative;
  overflow: hidden; 
  color: mediumturquoise;; 
  text-align: center; 
}

.topnav a {
  color: forestgreen;
  text-align: center;
  font-family: sans-serif;
  text-align: center; 
}

.topnav a.active {
 color: red;
 text-align: center; 
}

.topnav a:hover {
  color: blue; 
  text-align: center; 
}

.logo1 {
  float: left;
  border-radius: 50%;
  margin-right: 40px; 
}

.logo2 {
  float: right;
  border-radius: 40%;
  margin-left: 40px; 
}

.top {
  width: 100%;
  margin: auto;
  text-align: center;
  min-height: 70px;
  padding: 30px; 
}

.title {
  display: inline; 
}

#text {
  text-align: center; 
}

#dinercanada {
  color: red; 
}

#dinermexico {
  color: green; 
}

#dinerusa {
  color: blue; 
}

div#research {
  margin: 0 150px 0 150px;  
  position: center;
  border-width: 2em;
  border-color: black
  padding: 100px 0 0 0; 
}

div#rearticle-menu {
  margin: 0 150px 0 150px;
  position: center; 
}