I just ran into this as well, and found a better solution than -webkit-appearance:none (which looks clunky to me without extra styling). You can make the font size bigger while keeping the standard webkit appearance if you set a border color.
select {
font-size:1.2em;
border-color:#999; /* without this, it won't work */
}
Pretty silly, but at least it works, and in both Chrome and Safari.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…