select {
    width: 80%; /* Only for example */
}

    select.form-control + .chosen-container.chosen-container-single .chosen-single {
        display: block;
        /*width: 100%;*/
        height: 47px;                                                                               /* Control box height, Original 34px */
        padding: 14px 10px;
        font-size: 0.62rem;               /* selected displayed font size */                         /* Control box font size Original 14px */
        font-weight: bold;
        /*font-family: Arial;*/
        line-height: 20px;
        color: black;                                                                                /* Control box Forecolor Original #555 */
        vertical-align: middle;
        background-color: #fff;                                                                      /* Control box Backcolor */
        border: 1px solid #7373ff;                                                                   /* Control box border color Original #ccc */
        border-radius: 4px;
        -webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,0.075);
        box-shadow: inset 0 1px 1px rgba(0,0,0,0.075);
        -webkit-transition: border-color ease-in-out .15s,box-shadow ease-in-out .15s;
        transition: border-color ease-in-out .15s,box-shadow ease-in-out .15s;
        background-image: none;
    }

    select.form-control + .chosen-container-active .chosen-single {
        border: 1px solid blue !important;
        /*box-shadow: 0 0 3px #FFF inset, 0 1px 1px rgba(0, 0, 0, 0.1);*/
        box-shadow: 0 0 6px 0 blue !important;                                                       /* Control box active border color original No such a css class */
        transition: .3s !important;
    }
        
        select.form-control + .chosen-container.chosen-container-single .chosen-single div {
            top: 10px;                                                                                /* Control box Arrow box Position Original 4px */
            color: #000;
            /*border: 1px solid red;*/
        }

    select.form-control + .chosen-container .chosen-drop {
        background-color: #FFF;
        border: 1px solid blue !important;
        box-shadow: 0 0 6px 0 blue !important;                                                        /* items active border color original No such a css class */
        transition: .3s !important;
        margin: 2px 0 0;
    }

    select.form-control + .chosen-container .chosen-search input[type=text] {
        display: block;
        width: 100%;
        height: 34px;
        padding: 6px 12px;
        font-size: 14px;
        line-height: 1.428571429;
        color: #555;
        vertical-align: middle;
        background-color: #FFF;                                                                        /* Search box BackColor */
        border: 1px solid #CCC;                                                                        /* Search box border color works with !important */
        border-radius: 4px;
        -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
        box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
        -webkit-transition: border-color ease-in-out 0.15s, box-shadow ease-in-out 0.15s;
        transition: border-color ease-in-out 0.15s, box-shadow ease-in-out 0.15s;
        background-image: none;
    }

    select.form-control + .chosen-container .chosen-results {
        margin: 2px 0 0;
        padding: 5px 0;
        font-size: 0.62rem; /* Items Font size */
        /*font-family: Arial;*/
        list-style: none;
        background-color: #fff; /* Items box Backcolor beneath search box */
        margin-bottom: 5px;
    }

        select.form-control + .chosen-container .chosen-results li,
        select.form-control + .chosen-container .chosen-results li.active-result {
            display: block;
            padding: 3px 20px;
            clear: both;
            font-weight: bold;
            line-height: 1.828571429;  /* items height */
            color: black;                                                                                  /* Items Forecolor Original #333*/
            white-space: nowrap;
            background-image: none;
            /*margin-top: 10px;
            margin-bottom: 10px;*/
        }

            select.form-control + .chosen-container .chosen-results li:hover,
            select.form-control + .chosen-container .chosen-results li.active-result:hover,
            select.form-control + .chosen-container .chosen-results li.highlighted {
                color: black;                                                                               /* Hovered item Forecolor Original #FFF */
                /*font-weight: bold;*/
                text-decoration: none;
                background-color: #428BCA;                                                                 /* Hovered item Backcolor */
                background-image: none;
            }

    select.form-control + .chosen-container-multi .chosen-choices {
        display: block;
        width: 100%;
        min-height: 34px;
        padding: 6px;
        font-size: 14px;
        line-height: 1.428571429;
        color: #555;
        vertical-align: middle;
        background-color: #FFF;
        border: 1px solid #CCC;
        border-radius: 4px;
        -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
        box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
        -webkit-transition: border-color ease-in-out 0.15s, box-shadow ease-in-out 0.15s;
        transition: border-color ease-in-out 0.15s, box-shadow ease-in-out 0.15s;
        background-image: none;
    }

        select.form-control + .chosen-container-multi .chosen-choices li.search-field input[type="text"] {
            height: auto;
            padding: 5px 0;
        }

        select.form-control + .chosen-container-multi .chosen-choices li.search-choice {
            background-image: none;
            padding: 3px 24px 3px 5px;
            margin: 0 6px 0 0;
            font-size: 14px;
            font-weight: normal;
            line-height: 1.428571429;
            text-align: center;
            white-space: nowrap;
            vertical-align: middle;
            cursor: pointer;
            border: 1px solid #ccc;
            border-radius: 4px;
            color: #333;
            background-color: #FFF;
            border-color: #CCC;
        }

            select.form-control + .chosen-container-multi .chosen-choices li.search-choice .search-choice-close {
                top: 8px;
                right: 6px;
            }

    select.form-control + .chosen-container-multi.chosen-container-active .chosen-choices,
    select.form-control + .chosen-container.chosen-container-single.chosen-container-active .chosen-single,
    select.form-control + .chosen-container .chosen-search input[type=text]:focus {
        border-color: #66AFE9;
        outline: 0;
        -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),0 0 8px rgba(102, 175, 233, 0.6);
        box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),0 0 8px rgba(102, 175, 233, 0.6);
    }

    select.form-control + .chosen-container-multi .chosen-results li.result-selected {
        display: list-item;
        color: #ccc;
        cursor: default;
        background-color: white;
    }