.Header {
    border: 5px outset  #00b7ab;
    border-radius:50px 25px;
    background-color:lightblue;
    text-align: center;
    color: black;
}

.Header a:link {
  color: black
}

.Header a:visited {
  color:black
}

body {
  text-align: center;
  background-color: #007ba7;
  color: #d3d3d3;
  font-family: Verdana;
}
a:link {
    color: #d3d3d3;
}
a:visited {
    color: #d3d3d3;
}

.table tr, table td, table{
 border:1px solid #ddd; 
 border-collapse: collapse;
 padding: 10px;
 margin-left:auto;
 margin-right:auto;
}

.authors td:nth-child(even) {
  background-color: #18bc0e;
}

.authors td:nth-child(odd) {
  background-color:  #15a30c;
}

.titles td:nth-child(even) {
  background-color:  #3fc999 ;
  color:black;
}

.titles td:nth-child(odd) {
  background-color:  #339e79 ;
}

.continents td:nth-child(even) {
  background-color:  #9a8c44 ;
}

.continents td:nth-child(odd) {
  background-color:  #675e2c ;
}

.languages td:nth-child(even) {
  background-color:  #c539f3 ;
}

.languages td:nth-child(odd) {
  background-color:  #952eb7 ;
}

.countries td:nth-child(even) {
  background-color:  #f8f456 ;
  color:black;
}

.countries td:nth-child(odd) {
  background-color:  #d9d54e ;
  color:black;
}

.own td:nth-child(even) {
  background-color:  #5ceaf8 ;
  color: black;
}

.own td:nth-child(odd) {
  background-color:  #51c6d1 ;
}

.libby td:nth-child(even) {
  background-color:  #5f73f8 ;
}

.libby td:nth-child(odd) {
  background-color:  #4451ae ;
}

.literary td:nth-child(even) {
  background-color:  #f44f3a ;
}

.literary td:nth-child(odd) {
  background-color:  #b23b2c ;
}

.genres td:nth-child(even) {
  background-color:  #dbc0f6 ;
  color: black;
}

.genres td:nth-child(odd) {
  background-color:  #a390b5 ;
}