body {
  background-color: black;
  color: white;
  font-family: Verdana;
  
  width: 900px;

  border: 0.1px solid black;
  
  /* Centering #main on the screen */
  margin: auto;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;

paddingNCities
 {
     padding: 50px 50px 50px 50px;
 }

     /* Three image containers (use 25% for four, and 50% for two, etc) */
column {
  float: left;
  width: 100%;
  padding: 5px;
}

/* Clear floats after image containers */
row::after {
  content: "";
  clear: both;
  display: table;
} 
    
center {
  display: block;
  margin-left: auto;
  margin-right: auto;
  
  padding: 10px 10px 10px 10px;
}
a {
  text-align: center;
}

mark{
  background-color: aquamarine
  color snow
  
}
h:hover {
  background-color: yellow;
  font-size: 18px;
}
  .center_table{
    margin-left: auto;
    margin-right: auto;
  }
  
  
  
  container{
  font-family: arial;
  font-size: 24px;
  margin: 25px;
  width: 350px;
  height: 200px;
  outline: dashed 1px black;
  /* Setup */
  position: relative;
  }
  
  
}