.firma {
    position: relative;
    width: 250px;
    height: 200px;
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
    border: 1px solid black;
}

.imgenF {
    position: absolute;
    left: 0;
    top: 0;
}

.signature-pad {
    position: absolute;
    left: 0;
    top: 0;
    width: 250px;
    height: 200px;
}

.firma2 {
    position: relative;
    width: 250px;
    height: 200px;
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
    border: 1px solid black;
}

.signature-pad2 {
    position: absolute;
    left: 0;
    top: 0;
    width: 250px;
    height: 200px;
}