.tabla{
  border: 2px double black;  
}

tr:nth-child(2n){
    background-color: rgb(236, 233, 185);
}

.tabla tr:hover{
    background-color: yellow;
}

.tabla tr th{
    border: 2px solid black;
}

.tabla tr td{
    border: 2px solid black;
}

.tabla tr th{
    font-weight: bold;
    background-color: rgb(92, 226, 143);
}

img{
    width: 20px;
    margin-left: none;
}

.tabla tr .euro{
    background-color: rgb(172, 220, 240);
}

.tabla tr .dolar{
    background-color: rgb(172, 220, 240);
}

.tabla tr .libra{
    background-color: rgb(172, 220, 240);
}

.tabla tr .yen{
    background-color: rgb(172, 220, 240);
}

.regresar{
    margin-top: 750px;
    text-align: center;
    font-size: 25px;}
    .back{
        font-family: Verdana, Geneva, Tahoma, sans-serif;
        text-decoration: none;
        color: black;}
        .back:hover{
            text-decoration: underline;
}