.ui-multiselect-hasfilter ul {
    position: relative;
    top: 2px;
}

.ui-multiselect-filter {
    float: right;
    margin-left: 10px;
    font-size: 14px;
    width: 90%;
}

    .ui-multiselect-filter input {
        width: 70%;
        font-size: 10px;
        margin-right: 5px;
        height: 15px;
        padding: 2px;
        border: 1px solid #292929;
        -webkit-appearance: textfield;
        -webkit-box-sizing: content-box;
    }