{"id":1847,"date":"2025-02-21T23:10:43","date_gmt":"2025-02-21T15:10:43","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=1847"},"modified":"2025-02-21T23:10:43","modified_gmt":"2025-02-21T15:10:43","slug":"css3-%e5%9b%be%e7%89%87","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/02\/21\/css3-%e5%9b%be%e7%89%87\/","title":{"rendered":"CSS3 \u56fe\u7247"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">CSS3 \u63d0\u4f9b\u4e86\u5f88\u591a\u65b0\u7684\u7279\u6027\uff0c\u53ef\u4ee5\u5e2e\u52a9\u4f60\u66f4\u597d\u5730\u63a7\u5236\u56fe\u7247\u7684\u5916\u89c2\u548c\u884c\u4e3a\u3002\u65e0\u8bba\u662f\u4e3a\u56fe\u7247\u6dfb\u52a0\u6ee4\u955c\u3001\u88c1\u526a\uff0c\u8fd8\u662f\u8bbe\u7f6e\u54cd\u5e94\u5f0f\u56fe\u7247\uff0c\u90fd\u53ef\u4ee5\u901a\u8fc7 CSS3 \u5b9e\u73b0\u3002\u4e0b\u9762\u662f\u4e00\u4e9b\u5e38\u7528\u7684 CSS3 \u56fe\u7247\u76f8\u5173\u7684\u6280\u5de7\u548c\u5c5e\u6027\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. <strong>\u80cc\u666f\u56fe\u7247 (background-image)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>background-image<\/code> \u7528\u4e8e\u4e3a\u5143\u7d20\u8bbe\u7f6e\u80cc\u666f\u56fe\u7247\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7 <code>background-size<\/code>\u3001<code>background-position<\/code> \u7b49\u5c5e\u6027\u6765\u8c03\u6574\u56fe\u7247\u7684\u663e\u793a\u6548\u679c\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u8bbe\u7f6e\u80cc\u666f\u56fe\u7247<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>div {\n  background-image: url('image.jpg');\n  background-size: cover; \/* \u4f7f\u56fe\u7247\u5145\u6ee1\u5143\u7d20\u533a\u57df *\/\n  background-position: center center; \/* \u56fe\u7247\u5c45\u4e2d *\/\n  background-repeat: no-repeat; \/* \u4e0d\u91cd\u590d\u80cc\u666f\u56fe\u7247 *\/\n  height: 300px;\n  width: 100%;\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">2. <strong>\u80cc\u666f\u56fe\u7247\u7684\u54cd\u5e94\u5f0f\u8bbe\u7f6e<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u6211\u4eec\u4f7f\u7528\u80cc\u666f\u56fe\u7247\u65f6\uff0c\u53ef\u4ee5\u5229\u7528 <code>background-size<\/code> \u5c5e\u6027\u4f7f\u5176\u54cd\u5e94\u5f0f\u3002<code>background-size: cover<\/code> \u548c <code>background-size: contain<\/code> \u662f\u5e38\u7528\u7684\u4e24\u4e2a\u503c\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>cover<\/code>\uff1a\u56fe\u7247\u4f1a\u8986\u76d6\u6574\u4e2a\u5143\u7d20\uff0c\u53ef\u80fd\u4f1a\u88c1\u526a\u56fe\u7247\u7684\u4e00\u90e8\u5206\uff0c\u4fdd\u6301\u56fe\u7247\u7684\u7eb5\u6a2a\u6bd4\u3002<\/li>\n\n\n\n<li><code>contain<\/code>\uff1a\u56fe\u7247\u4f1a\u9002\u5e94\u5143\u7d20\u7684\u5927\u5c0f\uff0c\u4fdd\u6301\u56fe\u7247\u7684\u7eb5\u6a2a\u6bd4\uff0c\u4f46\u53ef\u80fd\u4f1a\u7559\u767d\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u54cd\u5e94\u5f0f\u80cc\u666f\u56fe\u7247<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>div {\n  background-image: url('image.jpg');\n  background-size: cover;\n  background-position: center center;\n  height: 300px;\n  width: 100%;\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3. <strong>CSS3 \u56fe\u7247\u6ee4\u955c (filter)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CSS3 \u63d0\u4f9b\u4e86 <code>filter<\/code> \u5c5e\u6027\u6765\u5bf9\u56fe\u50cf\u5e94\u7528\u5404\u79cd\u6548\u679c\uff0c\u5982\u6a21\u7cca\u3001\u4eae\u5ea6\u3001\u5bf9\u6bd4\u5ea6\u7b49\u3002<code>filter<\/code> \u5c5e\u6027\u652f\u6301\u591a\u4e2a\u51fd\u6570\uff0c\u5982 <code>blur()<\/code>, <code>brightness()<\/code>, <code>contrast()<\/code> \u7b49\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5e38\u89c1\u7684\u56fe\u7247\u6ee4\u955c\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>blur(px)<\/code>\uff1a\u6a21\u7cca\u6548\u679c<\/li>\n\n\n\n<li><code>brightness(%)<\/code>\uff1a\u8c03\u6574\u4eae\u5ea6<\/li>\n\n\n\n<li><code>contrast(%)<\/code>\uff1a\u8c03\u6574\u5bf9\u6bd4\u5ea6<\/li>\n\n\n\n<li><code>grayscale(%)<\/code>\uff1a\u7070\u5ea6\u6548\u679c<\/li>\n\n\n\n<li><code>sepia(%)<\/code>\uff1a\u6000\u65e7\u6548\u679c<\/li>\n\n\n\n<li><code>invert(%)<\/code>\uff1a\u53cd\u8f6c\u989c\u8272<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u5e94\u7528\u56fe\u7247\u6ee4\u955c<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>img {\n  filter: grayscale(50%) brightness(1.2) blur(3px);\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">4. <strong>\u5706\u89d2\u56fe\u7247 (border-radius)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>border-radius<\/code> \u5c5e\u6027\u53ef\u4ee5\u4f7f\u56fe\u7247\u7684\u89d2\u53d8\u5706\uff0c\u521b\u5efa\u5706\u5f62\u6216\u692d\u5706\u5f62\u6548\u679c\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u5706\u5f62\u56fe\u7247<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>img {\n  border-radius: 50%; \/* \u8bbe\u7f6e\u56fe\u7247\u4e3a\u5706\u5f62 *\/\n  width: 200px;\n  height: 200px;\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">5. <strong>\u88c1\u526a\u56fe\u7247 (clip-path)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>clip-path<\/code> \u5c5e\u6027\u53ef\u4ee5\u7528\u6765\u88c1\u526a\u56fe\u7247\uff0c\u4f7f\u5176\u663e\u793a\u7279\u5b9a\u7684\u5f62\u72b6\uff0c\u6bd4\u5982\u5706\u5f62\u3001\u692d\u5706\u5f62\u3001\u591a\u8fb9\u5f62\u7b49\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u88c1\u526a\u4e3a\u5706\u5f62<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>img {\n  clip-path: circle(50%); \/* \u88c1\u526a\u56fe\u7247\u4e3a\u5706\u5f62 *\/\n  width: 200px;\n  height: 200px;\n}<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u88c1\u526a\u4e3a\u591a\u8fb9\u5f62<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>img {\n  clip-path: polygon(50% 0%, 0% 100%, 100% 100%); \/* \u88c1\u526a\u4e3a\u4e09\u89d2\u5f62 *\/\n  width: 200px;\n  height: 200px;\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">6. <strong>\u54cd\u5e94\u5f0f\u56fe\u7247 (object-fit)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>object-fit<\/code> \u5c5e\u6027\u7528\u4e8e\u6307\u5b9a\u56fe\u7247\u5982\u4f55\u9002\u5e94\u5176\u5bb9\u5668\uff0c\u5e38\u7528\u4e8e\u56fe\u7247\u81ea\u9002\u5e94\u4e0d\u540c\u5c4f\u5e55\u548c\u5bb9\u5668\u5927\u5c0f\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>fill<\/code>\uff1a\u56fe\u7247\u4f1a\u88ab\u62c9\u4f38\u4ee5\u586b\u6ee1\u6574\u4e2a\u5bb9\u5668\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u56fe\u7247\u7684\u5931\u771f\u3002<\/li>\n\n\n\n<li><code>contain<\/code>\uff1a\u56fe\u7247\u4fdd\u6301\u7eb5\u6a2a\u6bd4\u5e76\u9002\u5e94\u5bb9\u5668\uff0c\u53ef\u80fd\u4f1a\u6709\u7a7a\u767d\u3002<\/li>\n\n\n\n<li><code>cover<\/code>\uff1a\u56fe\u7247\u4f1a\u586b\u5145\u6574\u4e2a\u5bb9\u5668\uff0c\u53ef\u80fd\u4f1a\u88c1\u526a\u90e8\u5206\u5185\u5bb9\uff0c\u4f46\u4e0d\u4f1a\u6539\u53d8\u56fe\u7247\u6bd4\u4f8b\u3002<\/li>\n\n\n\n<li><code>none<\/code>\uff1a\u56fe\u7247\u4e0d\u4f1a\u6539\u53d8\u5927\u5c0f\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u54cd\u5e94\u5f0f\u56fe\u7247<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>img {\n  width: 100%;\n  height: 100%;\n  object-fit: cover; \/* \u4f7f\u56fe\u7247\u586b\u5145\u6574\u4e2a\u5bb9\u5668 *\/\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">7. <strong>\u56fe\u7247\u61d2\u52a0\u8f7d (lazy loading)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CSS3 \u5e76\u4e0d\u76f4\u63a5\u652f\u6301\u61d2\u52a0\u8f7d\uff0c\u4f46\u4f60\u53ef\u4ee5\u4f7f\u7528 <code>loading=\"lazy\"<\/code> \u5c5e\u6027\u6765\u5b9e\u73b0\u56fe\u7247\u7684\u61d2\u52a0\u8f7d\u3002\u6b64\u5c5e\u6027\u4f1a\u5728\u56fe\u7247\u5373\u5c06\u8fdb\u5165\u89c6\u53e3\u65f6\u624d\u52a0\u8f7d\uff0c\u4f18\u5316\u9875\u9762\u52a0\u8f7d\u901f\u5ea6\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u56fe\u7247\u61d2\u52a0\u8f7d<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;img src=\"image.jpg\" alt=\"Image\" loading=\"lazy\"&gt;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">8. <strong>\u6e10\u53d8\u80cc\u666f\u56fe\u7247 (linear-gradient, radial-gradient)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f60\u53ef\u4ee5\u4f7f\u7528 CSS3 \u7684\u6e10\u53d8\u80cc\u666f\u6765\u521b\u5efa\u6e10\u53d8\u6548\u679c\uff0c\u53ef\u4ee5\u4e0e\u56fe\u7247\u4e00\u8d77\u4f7f\u7528\uff0c\u5f62\u6210\u66f4\u4e30\u5bcc\u7684\u80cc\u666f\u6837\u5f0f\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u7ebf\u6027\u6e10\u53d8\u4e0e\u80cc\u666f\u56fe\u7247\u7ed3\u5408<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>div {\n  background-image: linear-gradient(to right, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('image.jpg');\n  background-size: cover;\n  background-position: center center;\n  height: 300px;\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">9. <strong>\u4f7f\u7528 SVG \u56fe\u7247<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SVG\uff08\u53ef\u7f29\u653e\u77e2\u91cf\u56fe\u5f62\uff09\u662f\u4e00\u79cd\u77e2\u91cf\u683c\u5f0f\uff0c\u53ef\u4ee5\u901a\u8fc7 CSS \u63a7\u5236\u5176\u5916\u89c2\u3002\u4f8b\u5982\uff0c\u4f60\u53ef\u4ee5\u4e3a SVG \u56fe\u7247\u8bbe\u7f6e\u586b\u5145\u989c\u8272\u3001\u8fb9\u6846\u3001\u5927\u5c0f\u7b49\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u4e3a SVG \u8bbe\u7f6e\u989c\u8272<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>svg {\n  fill: #3498db; \/* \u8bbe\u7f6e SVG \u56fe\u5f62\u7684\u586b\u5145\u989c\u8272 *\/\n  width: 100px;\n  height: 100px;\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">10. <strong>\u56fe\u7247\u4e0e\u6587\u672c\u91cd\u53e0 (background-blend-mode)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>background-blend-mode<\/code> \u5c5e\u6027\u7528\u4e8e\u8bbe\u7f6e\u80cc\u666f\u56fe\u50cf\u4e0e\u80cc\u666f\u989c\u8272\u7684\u6df7\u5408\u6a21\u5f0f\u3002\u5b83\u53ef\u4ee5\u521b\u5efa\u975e\u5e38\u72ec\u7279\u7684\u6548\u679c\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u56fe\u7247\u4e0e\u989c\u8272\u6df7\u5408<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>div {\n  background-image: url('image.jpg');\n  background-color: rgba(0, 0, 0, 0.5);\n  background-blend-mode: overlay; \/* \u56fe\u7247\u4e0e\u80cc\u666f\u989c\u8272\u53e0\u52a0 *\/\n  height: 300px;\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">11. <strong>\u54cd\u5e94\u5f0f\u56fe\u7247 (srcset &amp; sizes)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3a\u4e86\u4f18\u5316\u56fe\u7247\u52a0\u8f7d\u901f\u5ea6\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>srcset<\/code> \u548c <code>sizes<\/code> \u5c5e\u6027\uff0c\u6839\u636e\u8bbe\u5907\u7684\u5c4f\u5e55\u5206\u8fa8\u7387\u9009\u62e9\u4e0d\u540c\u7684\u56fe\u7247\u3002<code>srcset<\/code> \u53ef\u4ee5\u63d0\u4f9b\u591a\u4e2a\u56fe\u7247\u6e90\uff0c\u800c <code>sizes<\/code> \u53ef\u4ee5\u6307\u5b9a\u4e0d\u540c\u60c5\u51b5\u4e0b\u7684\u56fe\u7247\u663e\u793a\u5c3a\u5bf8\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u54cd\u5e94\u5f0f\u56fe\u7247<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;img src=\"image-500.jpg\" \n     srcset=\"image-500.jpg 500w, image-1000.jpg 1000w, image-1500.jpg 1500w\" \n     sizes=\"(max-width: 600px) 500px, (max-width: 1200px) 1000px, 1500px\" \n     alt=\"Responsive Image\"&gt;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u7efc\u5408\u793a\u4f8b\uff1a\u4f7f\u7528 CSS3 \u7f8e\u5316\u56fe\u7247<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;!DOCTYPE html&gt;\n&lt;html lang=\"en\"&gt;\n&lt;head&gt;\n  &lt;meta charset=\"UTF-8\"&gt;\n  &lt;meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"&gt;\n  &lt;title&gt;CSS3 \u56fe\u7247&lt;\/title&gt;\n  &lt;style&gt;\n    .image-container {\n      width: 100%;\n      height: 400px;\n      background-image: url('image.jpg');\n      background-size: cover;\n      background-position: center;\n      border-radius: 10px;\n      filter: grayscale(50%) brightness(1.2);\n      position: relative;\n    }\n\n    .image-container:before {\n      content: '';\n      position: absolute;\n      top: 0;\n      left: 0;\n      right: 0;\n      bottom: 0;\n      background: rgba(0, 0, 0, 0.5); \/* \u534a\u900f\u660e\u9ed1\u8272\u906e\u7f69 *\/\n      border-radius: 10px;\n    }\n\n    .image-text {\n      position: absolute;\n      top: 50%;\n      left: 50%;\n      transform: translate(-50%, -50%);\n      color: white;\n      font-size: 24px;\n      font-weight: bold;\n    }\n  &lt;\/style&gt;\n&lt;\/head&gt;\n&lt;body&gt;\n  &lt;div class=\"image-container\"&gt;\n    &lt;div class=\"image-text\"&gt;Beautiful Image&lt;\/div&gt;\n  &lt;\/div&gt;\n&lt;\/body&gt;\n&lt;\/html&gt;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u603b\u7ed3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CSS3 \u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u56fe\u50cf\u5904\u7406\u529f\u80fd\uff0c\u53ef\u4ee5\u8ba9\u4f60\u521b\u5efa\u54cd\u5e94\u5f0f\u56fe\u7247\u3001\u5e94\u7528\u6ee4\u955c\u3001\u88c1\u526a\u56fe\u7247\u3001\u521b\u5efa\u6e10\u53d8\u6548\u679c\u7b49\u3002\u7ed3\u5408 CSS3 \u7684\u5404\u79cd\u5c5e\u6027\uff0c\u53ef\u4ee5\u5927\u5927\u63d0\u5347\u7f51\u9875\u4e2d\u56fe\u7247\u7684\u89c6\u89c9\u6548\u679c\u548c\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CSS3 \u63d0\u4f9b\u4e86\u5f88\u591a\u65b0\u7684\u7279\u6027\uff0c\u53ef\u4ee5\u5e2e\u52a9\u4f60\u66f4\u597d\u5730\u63a7\u5236\u56fe\u7247\u7684\u5916\u89c2\u548c\u884c\u4e3a\u3002\u65e0\u8bba\u662f\u4e3a\u56fe\u7247\u6dfb\u52a0\u6ee4\u955c\u3001\u88c1\u526a\uff0c\u8fd8\u662f\u8bbe\u7f6e\u54cd\u5e94\u5f0f [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[55],"tags":[],"class_list":["post-1847","post","type-post","status-publish","format-standard","hentry","category-css"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1847","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=1847"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1847\/revisions"}],"predecessor-version":[{"id":1848,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1847\/revisions\/1848"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=1847"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=1847"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=1847"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}