body{
    margin: 0 auto;
    width: 750px;
}

ul{
    list-style-type: none;
    margin:0;
    padding: 0;
    display: flex;
    flex-direction: row;
}

li{
    flex-grow: 1;
}

a:hover {background-color:LightCoral; }

#listaPtd{
    border:solid 1px black;
    width: 100%;
}

#listaPtd thead{
    background: black;
    color:white;
}