.ui-multiselect-hasfilter ul {
    position: relative;
    top: 2px;
}
.ui-multiselect-filter {
    float: left;
    font-size: 11px;
    margin-right: 10px;
}
.ui-multiselect-filter input {
    border: 1px solid #292929;
    box-sizing: content-box;
    font-size: 10px;
    height: 15px;
    margin-left: 5px;
    padding: 2px;
    width: 100px;
}