标签：require css hat pac NPU anti data rect site
Using just semantic CSS Pseudo-Classes you can help define important states for form elements that ensure the user provides the correct data without frustration.
input:focus { outline: none; box-shadow: 3px 3px 1px rgba(0,0,0,0.2); border: 1px solid rgba(0,0,0,0.5); } fieldset:disabled { /* :enabled opposite */ opacity: 0.5; } input:checked + label { font-style: italic; } input:invalid { border-color: red; } input:valid { border-color: green; } input:required { border-width: 2px; }
[CSS3] Define Form Element States with CSS Form Pseudo Classes
标签：require css hat pac NPU anti data rect site
原文地址：https://www.cnblogs.com/Answer1215/p/10068191.html
