1、关于使用:invalid
伪类来实现验证不通过样式设置
<style> ???????input[type=email]:invalid + .next-step{ ???????????display: none ???????} ???</style></head><body> ???<form action=""> ???????<input type="email"> ???????<span class="next-step">Next</span> ???</form>
HTML/CSS优化
原文地址:https://www.cnblogs.com/snmic/p/10334159.html