.campo {
    width: 60px;
    height: 60px;
    border-radius: 5px;
    text-align: center;
    font-size: 25px;
    border: 1px solid #999
}

    .campo:focus {
        outline: none !important;
        box-shadow: 0 0 10px #719ECE;
        border: 1px solid #999
    }

input:focus {
    outline: none !important;
    border-color: #719ECE;
    box-shadow: 0 0 10px #719ECE;
}

.titulo {
    font-weight: 600;
    text-align: center;
    font-size: 20px;
    margin-top: 20px;
    margin-bottom: 20px;
}

.err2text {
    color: red;
    text-align: center;
    font-weight: 600;
    font-size: 15px;
    height: 20px;
    margin: 10px 0;
}

.ok {
    color: mediumseagreen;
    text-align: center;
    font-weight: 600;
    font-size: 15px;
    height: 20px;
    margin: 10px 0;
}


.btn1 {
    text-align: center;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    margin: 10px 0 15px 0
}

    .btn1:hover {
        color: cornflowerblue;
    }