106 lines
2.9 KiB
HTML
106 lines
2.9 KiB
HTML
<!doctype html>
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<html lang="zh-CN">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>高级CSS挑战 - 复杂表单</title>
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<style>
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:root {
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--primary: #3498db;
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--danger: #e74c3c;
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--success: #2ecc71;
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--border: #bdc3c7;
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}
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.form-group {
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margin-bottom: 1rem;
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}
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input[type="text"],
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input[type="email"],
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select {
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width: 100%;
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padding: 0.75rem;
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border: 2px solid var(--border);
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border-radius: 6px;
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transition: all 0.3s ease;
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}
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input:focus,
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select:focus {
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outline: none;
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border-color: var(--primary);
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box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
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}
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input:invalid {
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border-color: var(--danger);
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}
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input:valid {
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border-color: var(--success);
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}
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/* 自定义复选框 */
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.checkbox {
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position: relative;
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padding-left: 2rem;
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}
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.checkbox input {
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position: absolute;
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opacity: 0;
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}
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.checkmark {
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position: absolute;
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left: 0;
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height: 20px;
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width: 20px;
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background: white;
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border: 2px solid var(--border);
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border-radius: 4px;
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}
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.checkbox input:checked ~ .checkmark {
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background: var(--primary);
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border-color: var(--primary);
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}
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.checkmark::after {
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content: "";
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position: absolute;
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display: none;
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left: 6px;
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top: 2px;
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width: 5px;
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height: 10px;
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border: solid white;
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border-width: 0 2px 2px 0;
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transform: rotate(45deg);
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}
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.checkbox input:checked ~ .checkmark::after {
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display: block;
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}
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</style>
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</head>
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<body>
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<form>
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<div class="form-group">
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<input type="text" placeholder="姓名" required />
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</div>
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<div class="form-group">
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<input type="email" placeholder="邮箱" required />
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</div>
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<div class="form-group">
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<label class="checkbox">
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<input type="checkbox" required />
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<span class="checkmark"></span>
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同意条款
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</label>
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</div>
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</form>
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</body>
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</html>
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