.custom-select {
    width: 100%;
    padding: 10px 14px;
    font-size: 15px;
    color: #333;
    border: 2px solid #ddd;
    border-radius: 24px;
    background-color: #fff;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;

    background-image: url("data:image/svg+xml;utf8,<svg fill='%23666' height='24' viewBox='0 0 24 24' width='24' xmlns='http://www.w3.org/2000/svg'><path d='M7 10l5 5 5-5z'/></svg>");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 18px 18px;
}

.custom-select:focus {
    outline: none;
    border-color: #3182ce;
    box-shadow: 0 0 0 2px rgba(49, 130, 206, 0.3);
}