button {
 width: 100%;
 height: 100%;
 margin: 0;
 padding: 0;
 border: 0;
 cursor: pointer;
 background: none;
}

#inputDob {
 position: relative;
 top: 7px;
 vertical-align: top;
}

.in {
 position: relative;
 display: inline-block;
 width: 75px;
 height: 26px;
 margin-left: 8px;
 background: url(http://www.stellardawn.com/img/sdmain/date_of_birth/in_bg.png);
}

input {
 position: absolute;
 top: 5px;
 left: 10px;
 width: 55px;
 height: 16px;
 border: 0;
 padding: 0;
 color: white;
 font: bold 16px/16px arial,helvetica,freesans,sans-serif;
 background: none;
}

input.blur {
 color: #8a969a;
 top: 7px;
 height: 12px;
 font-size: 11px;
 line-height: 11px;
}