sanbuphy
d35211071a
- standardize border-radius from 8px to 6px for consistent styling - adjust padding values from 1rem to 0.75rem for better visual hierarchy - remove redundant overflow-y properties for cleaner code
298 lines
6.5 KiB
Vue
298 lines
6.5 KiB
Vue
<template>
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<div class="box-demo">
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<div class="demo-header">
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<span class="icon">📦</span>
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<span class="title">CSS 盒模型</span>
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<span class="subtitle">理解元素尺寸的构成</span>
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</div>
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<div class="main-area">
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<div class="left-panel">
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<div class="controls">
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<div class="control-row">
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<label>Padding</label>
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<input type="range" min="0" max="30" v-model.number="padding" />
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<span class="val">{{ padding }}px</span>
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</div>
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<div class="control-row">
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<label>Border</label>
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<input type="range" min="0" max="20" v-model.number="border" />
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<span class="val">{{ border }}px</span>
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</div>
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<div class="control-row">
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<label>Margin</label>
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<input type="range" min="0" max="30" v-model.number="margin" />
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<span class="val">{{ margin }}px</span>
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</div>
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</div>
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<div class="visual">
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<div class="layer margin" :style="{ padding: margin + 'px' }">
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<span class="label" v-if="margin >= 10">Margin</span>
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<div class="layer border" :style="{ borderWidth: border + 'px' }">
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<span class="label" v-if="border >= 8">Border</span>
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<div class="layer padding" :style="{ padding: padding + 'px' }">
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<span class="label" v-if="padding >= 10">Padding</span>
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<div class="content">内容</div>
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</div>
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</div>
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</div>
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</div>
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</div>
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<div class="right-panel">
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<div class="result">
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<div class="result-row">
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<span class="result-label">总宽度：</span>
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<span class="result-value">{{ total }}px</span>
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</div>
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<div class="formula">= {{ margin }}×2 + {{ border }}×2 + {{ padding }}×2 + {{ contentW }}</div>
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</div>
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<div class="code-block">
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<div class="code-title">CSS</div>
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<div class="code-content">
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<div class="line">.box {</div>
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<div class="line"> width: {{ contentW }}px;</div>
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<div class="line"> padding: {{ padding }}px;</div>
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<div class="line"> border: {{ border }}px solid;</div>
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<div class="line"> margin: {{ margin }}px;</div>
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<div class="line">}</div>
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</div>
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</div>
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</div>
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</div>
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<div class="info-box">
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<span class="icon">💡</span>
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<strong>核心思想：</strong>元素实际占用宽度 = 内容宽 + padding×2 + border×2 + margin×2
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</div>
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</div>
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</template>
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<script setup>
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import { computed, ref } from 'vue'
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const contentW = 80
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const padding = ref(15)
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const border = ref(8)
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const margin = ref(15)
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const total = computed(
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() => margin.value * 2 + border.value * 2 + padding.value * 2 + contentW
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)
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</script>
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<style scoped>
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.box-demo {
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border: 1px solid var(--vp-c-divider);
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border-radius: 6px;
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background: var(--vp-c-bg-soft);
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padding: 0.75rem;
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margin: 0.5rem 0;
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}
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.demo-header {
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display: flex;
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align-items: center;
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gap: 0.5rem;
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margin-bottom: 0.75rem;
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}
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.demo-header .icon { font-size: 1.25rem; }
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.demo-header .title { font-weight: bold; font-size: 1rem; }
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.demo-header .subtitle { color: var(--vp-c-text-2); font-size: 0.85rem; margin-left: 0.5rem; }
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.main-area {
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display: grid;
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grid-template-columns: 1fr 1fr;
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gap: 1rem;
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margin-bottom: 0.75rem;
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}
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@media (max-width: 768px) {
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.main-area { grid-template-columns: 1fr; }
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}
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.left-panel {
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display: flex;
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flex-direction: column;
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gap: 0.75rem;
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}
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.controls {
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display: flex;
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flex-direction: column;
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gap: 0.4rem;
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}
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.control-row {
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display: flex;
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align-items: center;
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gap: 0.5rem;
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background: var(--vp-c-bg);
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border: 1px solid var(--vp-c-divider);
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border-radius: 6px;
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padding: 0.4rem 0.6rem;
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}
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.control-row label {
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font-size: 0.8rem;
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font-weight: 600;
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min-width: 55px;
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color: var(--vp-c-text-1);
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}
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.control-row input[type='range'] {
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flex: 1;
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height: 4px;
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accent-color: var(--vp-c-brand);
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}
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.control-row .val {
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font-family: var(--vp-font-family-mono);
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font-size: 0.75rem;
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color: var(--vp-c-brand);
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min-width: 35px;
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text-align: right;
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}
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.visual {
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background: var(--vp-c-bg);
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border: 1px solid var(--vp-c-divider);
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border-radius: 6px;
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padding: 0.75rem;
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display: flex;
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justify-content: center;
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align-items: center;
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}
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.layer {
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position: relative;
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border-radius: 4px;
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display: flex;
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align-items: center;
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justify-content: center;
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transition: all 0.2s;
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}
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.layer .label {
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position: absolute;
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top: 2px;
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left: 4px;
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font-size: 9px;
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font-weight: 700;
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opacity: 0.7;
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}
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.margin {
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background: var(--vp-c-bg-soft);
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border: 1px dashed var(--vp-c-divider);
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}
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.margin .label { color: var(--vp-c-text-3); }
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.border {
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background: var(--vp-c-brand-soft);
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border-style: solid;
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border-color: var(--vp-c-brand);
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}
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.border .label { color: var(--vp-c-brand-1); }
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.padding {
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background: var(--vp-c-bg-alt);
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border: 1px dashed var(--vp-c-divider);
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}
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.padding .label { color: var(--vp-c-text-2); }
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.content {
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background: var(--vp-c-brand);
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color: #fff;
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border-radius: 4px;
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font-weight: 700;
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font-size: 0.75rem;
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width: 80px;
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height: 50px;
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display: flex;
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align-items: center;
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justify-content: center;
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}
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.right-panel {
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display: flex;
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flex-direction: column;
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gap: 0.5rem;
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}
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.result {
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background: var(--vp-c-bg);
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border: 1px solid var(--vp-c-divider);
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border-radius: 6px;
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padding: 0.6rem;
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}
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.result-row {
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display: flex;
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align-items: center;
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gap: 0.5rem;
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}
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.result-label {
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font-size: 0.85rem;
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font-weight: 600;
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color: var(--vp-c-text-1);
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}
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.result-value {
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font-size: 1.1rem;
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font-weight: 700;
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color: var(--vp-c-brand);
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}
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.formula {
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font-family: var(--vp-font-family-mono);
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font-size: 0.75rem;
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color: var(--vp-c-text-2);
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margin-top: 0.25rem;
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}
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.code-block {
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background: var(--vp-c-bg);
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border: 1px solid var(--vp-c-divider);
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border-radius: 6px;
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padding: 0.6rem;
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flex: 1;
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}
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.code-title {
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font-size: 0.75rem;
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font-weight: 600;
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color: var(--vp-c-text-2);
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margin-bottom: 0.4rem;
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}
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.code-content {
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background: #0b1221;
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color: #e5e7eb;
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border-radius: 4px;
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padding: 0.5rem;
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font-family: var(--vp-font-family-mono);
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font-size: 0.7rem;
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line-height: 1.5;
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}
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.line { white-space: pre; }
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.info-box {
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background: var(--vp-c-bg-alt);
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padding: 0.6rem;
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border-radius: 6px;
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font-size: 0.85rem;
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color: var(--vp-c-text-2);
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display: flex;
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gap: 0.25rem;
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}
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.info-box .icon { flex-shrink: 0; }
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.info-box strong { color: var(--vp-c-text-1); }
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</style>
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