.signature-wrapper {
    position: relative;
    width: 100%;
    max-width: 400px;
    height: 172px;
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
    border-bottom: 1px dotted #c0c0c0;
    background-color: #c0c0c0;
    padding: 5px;
    text-align: center;
}

.signature-pad {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    max-width: 400px;
    height: 170px;
    background-color: white;
    border-bottom: 1px dotted #c0c0c0;
}