The Android Browser's rendering of <select>s is buggy and will remove the normal styling if a background or border is applied.
Since <select>s not looking like <select>s is a pretty big usability issue, your best bet is to not style them for this browser only.
Unfortunately, there's no pure CSS way of selecting/excluding the Android Browser, so I recommend you use Layout Engine (https://github.com/stowball/Layout-Engine), which will add a class of .browser-android to the <html> tag.
You could then style all <select>s except on Android Browser, like so:
html:not(.browser-android) select {
background: #0f0;
border: 1px solid #ff0;
}
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…
