<style>
            .psp-category-dropdown-wrap{
                position:relative;
                display:inline-block;
                width:100%;
                overflow:hidden;
                border:1px solid #444;
                box-sizing:border-box;
            }

            .psp-category-dropdown{
                width:100%;
                border:none !important;
                background:transparent !important;
                outline:none;
                appearance:none;
                -webkit-appearance:none;
                -moz-appearance:none;
                display:block;
                color:inherit;
                font:inherit;
                cursor:pointer;
                padding:12px 45px 12px 16px;
                box-sizing:border-box;
            }

            .psp-category-dropdown-wrap::after{
                content:"▼";
                position:absolute;
                right:16px;
                top:50%;
                transform:translateY(-50%);
                font-size:12px;
                pointer-events:none;
                color:inherit;
            }
        </style>