body{
  background: #ffffff; 
  padding: 0;
  margin: 0; 
  font-family:'Cambria', 'Cochin', 'Georgia', 'Times', 'Times New Roman', 'serif';
}

#contenedor{
    background: f1f1f1;
    border: 0;
    margin: auto;
    width: 75%;
    min-height: 500px;
}
ul{
 background: white; 
 border-top: 0;
 height: 30px; 
 padding: 0; 
 margin: 0;
 list-style: none;
 text-align: center;
 width: 100%;
 display: flex;
}

li{
  
  display: inline-block; 
  height: 100%;  
  flex: 0.15;
 }
 
 /*li:hover{
    background: dodgerblue;
 }*/
 
 a{
   height: 50%;
   text-decoration: none;
   color: rgb(17, 17, 17);
   margin-top: 5px;  
   display: block;
 }
 
 a1{
  height: 18%;
  text-decoration: none;
  color: blue;
  margin-top: 5px;  
  display: block;
}

p{
  
  visibility: hidden;
}

a:hover p{
  visibility: visible;
}