JSFiddle - React, Tailwind, and code Playground

HTML

<div class="dropdown dropdown-dark" style="margin-left: 10px">
    
    <select class="ddText dropdown-select" id="opt" style="width: 90px;">
            <option value="1">1</option>
            <option value="1">1</option>
            <option value="1">1</option>
    </select>
    

                                </div>

CSS

.dropdown {
    display: inline-block;
    position: relative;
    overflow: hidden;
    height: 22px;
    background: #f2f2f2;
    border: 1px solid #bbc1c7;
    border-radius: 3px;
    background-image: -webkit-linear-gradient(top,transparent,rgba(0,0,0,.06));
    background-image: -moz-linear-gradient(top,transparent,rgba(0,0,0,.06));
    background-image: -o-linear-gradient(top,transparent,rgba(0,0,0,.06));
    background-image: linear-gradient(to bottom,transparent,rgba(0,0,0,.06));
    -webkit-box-shadow: 0 1px 1px rgba(0,0,0,.08);
    box-shadow: 0 1px 1px rgba(0,0,0,.08);
}

    .dropdown:before, .dropdown:after {
        content: '';
        position: absolute;
        z-index: 2;
        top: 7px;
        right: 10px;
        width: 0;
        height: 0;
        border: 4px dashed;
        border-color: #888888 transparent;
        pointer-events: none;
    }

    .dropdown:before {
        border-bottom-style: solid;
        border-top: none;
    }

    .dropdown:after {
        margin-top: 7px;
        border-top-style: solid;
        border-bottom: none;
    }

.dropdown-select {
    position: relative;
    width: 130%;
    margin: 0;
    padding: 6px 8px 6px 0px;
    height: 24px;
    line-height: 14px;
    font-size: 12px;
    color: #333;
    text-shadow: 0 1px white;
    background: #f2f2f2;
    background: rgba(0,0,0,0)!important;
    border: 0;
    border-radius: 0;
    -webkit-appearance: none;
    bottom: 3px;
}

    .dropdown-select:focus {
        z-index: 3;
        width: 100%;
        color: #394349;
        outline-offset: -2px;
    }

    .dropdown-select > option {
        margin: 3px;
        padding: 6px 8px;
        text-shadow: none;
        background: #f2f2f2;
        border-radius: 3px;
        cursor: pointer;
    }