#datepicker {
    margin: 0;
    padding: 0;
    height: 25px;
    vertical-align: bottom;
}

.ui-datepicker-trigger {
    margin: 2px;
    padding: 0;
    vertical-align: bottom;
}

.ui-datepicker-trigger img {
    width: 25px;
    height: 25px;
}

.offscreen {
    position: absolute;
    width: 1px;
    height: 1px;
    clip: rect(1px 1px 1px 1px);
    clip: rect(1px, 1px, 1px, 1px);
    overflow: hidden;
    margin: 0;
    padding: 0;
}

button.ui-datepicker-trigger {
    background-color: transparent !important;
    border: none !important;
    margin: auto !important;
}