* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: Georgia, 'Times New Roman', Times, serif;
}
body {
    background-color: lightgray;
      
}
header{
    text-align: center;
}

th {
    color:black;
    text-align: left;
}

tr , td, th {
    border: 1px solid black;
    padding: 10px;
}
table {
    
  margin-left: auto;
  margin-right: auto;
  margin-top: 10px;
  margin-bottom: 10px;
  border: 2px solid black;
  border-collapse: collapse;
  
}
#Table_Title{
    text-align: center;
}
div{
   display: flex;
    justify-content: center;
}
tr:nth-child(even) {background-color: gray;}
main{
    display: flex;
    flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}
nav{
    display: flex;
    justify-content: center;
    gap: 10px;
    
    padding: 15px;
    font-size: 16px;
}
article{
    width: 400px;
    padding: 15px;
}
aside{
    background-color: lightskyblue;
    width: 200px;
    padding-left: 15px;
    margin-left: 10px;
    
    
}
footer{
    display: flex;
    padding-top: 20px;
    text-align: center;
    justify-content: center;
}
a:link{
    color:dodgerblue
}
a:visited {
    color: blueviolet;
  }

  a:hover {
    color:white;
  }
  
  a:active {
    color:  lightskyblue;
  }

/* Add CSS selectors for the semantic elements:  */
/* header, nav, main, article, aside, footer */