.barra{
    background: rgb(0, 0, 167);
    border-radius: 10px;
    display: inline-block;
    color: yellow;
    padding: 10px 30px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 18px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    text-decoration: none;
}

.barra:hover {
    background: rgb(0, 0, 221);
}

.barra2{
    background: rgb(0, 0, 167);
    border-radius: 10px;
    display: inline-block;
    color: yellow;
    padding: 10px 30px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 18px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    text-decoration: none;
}

.barra2:hover {
    background: rgb(0, 0, 221);
}

small {
    font-size: 12px;
}