To change the appearance of the select dropdown arrow in an HTML, you can use CSS to target the select element and add a custom arrow. For example, the following CSS code will change the arrow:
select { -webkit-appearance: none; -moz-appearance: none; background: transparent; background-image: url("data:image/svg+xml;utf8,<svg fill='black' height='24' viewBox='0 0 24 24' width='24' xmlns='http://www.w3.org/2000/svg'><path d='M7 10l5 5 5-5z'/><path d='M0 0h24v24H0z' fill='none'/></svg>"); background-repeat: no-repeat; background-position-x: 100%; background-position-y: 5px; border: 1px solid #dfdfdf; border-radius: 2px; margin-right: 2rem; padding: .7rem; padding-right: 2rem; }
Note that you need to put the CSS code in your CSS file and make sure the -webkit-appearance/-moz-appearance is none.