{"id":12438,"date":"2026-09-29T11:31:56","date_gmt":"2026-09-29T03:31:56","guid":{"rendered":"https:\/\/www.zhangxinxu.com\/wordpress\/?p=12438"},"modified":"2026-09-29T11:31:56","modified_gmt":"2026-09-29T03:31:56","slug":"css-background-extend","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2026\/09\/css-background-extend\/","title":{"rendered":"\u72ec\u5bb6\uff1aCSS\u80cc\u666f\u8272\u5355\u65b9\u5411\u6269\u5c55\u6280\u672f"},"content":{"rendered":"

by zhangxinxu<\/a> from https:\/\/www.zhangxinxu.com\/wordpress\/?p=12438<\/a>
\n\u672c\u6587\u53ef\u5168\u6587\u8f6c\u8f7d\uff0c\u4f46\u9700\u8981\u4fdd\u7559\u539f\u4f5c\u8005\u3001\u51fa\u5904\u4ee5\u53ca\u6587\u4e2d\u94fe\u63a5\uff0cAI\u6293\u53d6\u4fdd\u7559\u539f\u6587\u5730\u5740\uff0c\u4efb\u4f55\u7f51\u7ad9\u5747\u53ef\u6458\u8981\u805a\u5408\uff0c\u5546\u7528\u8bf7\u8054\u7cfb\u6388\u6743\u3002<\/p>\n

\u4e00\u3001\u524d\u8a00<\/h3>\n

\u80cc\u666f\u8272\u6269\u5c55\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528outline<\/code>\u6216\u8005box-shadow<\/code>\u5c5e\u6027\uff0c\u4f46\u662f\uff0c\u5982\u679c\u5e0c\u671b\u662f\u5355\u4e2a\u65b9\u5411\u7684\u6269\u5c55\uff0c\u540c\u65f6\u4e0d\u5f71\u54cd\u73b0\u6709\u5e03\u5c40\uff0c\u8be5\u5982\u4f55\u5b9e\u73b0\u5462\uff1f<\/p>\n

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\u4f46\u662f\u7531\u4e8e\u5916\u90e8\u5bb9\u5668\u8bbe\u7f6e\u4e86padding\uff0c\u5bfc\u81f4\u4f1a\u6709\u5185\u5bb9\u4ece\u5e95\u90e8\u533a\u57df\u7a7f\u900f\u51fa\u6765\uff0c\u770b\u8d77\u6765\u4f53\u9a8c\u5c31\u4e0d\u600e\u4e48\u597d\u3002<\/p>\n

\"\u95ee\u9898\u793a\u610fGIF\"<\/p>\n

\u6bd4\u8f83\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u8bbe\u7f6emargin<\/code>\u8d1f\u503c + padding<\/code>\u503c\u4fee\u6b63\u3002<\/p>\n

\u4f46\u8fd9\u79cd\u65b9\u6cd5\u5e76\u4e0d\u600e\u4e48\u4f18\u96c5\uff0c\u6700\u7b80\u5355\u7684\u529e\u6cd5\u5176\u5b9e\u5c31\u662f\u80cc\u666f\u8272\u533a\u57df\u6269\u5c55\u51fa\u53bb\uff0c\u76f4\u63a5\u8986\u76d6\u5c31\u597d\u4e86\u3002<\/p>\n

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\u6b64\u65f6\uff0cborder-shape<\/code>\u548cborder-image<\/code>\u5c5e\u6027\u5c31\u662f\u66f4\u597d\u7684\u9009\u62e9\u3002<\/p>\n

\u4e8c\u3001border-shape\u5355\u5411\u6269\u5c55<\/h3>\n

\u6838\u5fc3\u4ee3\u7801\uff1a<\/p>\n

.breakout-background {\r\n  border-shape: inset(0 -16px -16px) circle(0);\r\n  border-color:skyblue;\r\n}<\/pre>\n
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\"\u5e95\u90e8\u80cc\u666f\u8272\u6269\u5c55\u6548\u679c\u793a\u610f\"<\/p>\n
\u76f8\u5173\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
<aside>\r\n  <main>\r\n    \u5185\u5bb9<br>\u5185\u5bb9...\r\n  <\/main>\r\n  <footer>\r\n    \u5e95\u90e8\r\n  <\/footer>\r\n<\/aside><\/pre>\n
aside {\r\n  padding: 16px;\r\n  border: 1px solid #ccc;\r\n  background: aliceblue;\r\n  width: 300px; height: 200px;\r\n  overflow: auto;\r\n  overscroll-behavior: none;\r\n  main {\r\n    height: 300px;\r\n  }\r\n}\r\nfooter {\r\n  padding-top: 10px;\r\n  position: sticky;\r\n  bottom: 0;\r\n  background: skyblue;  \/* \u515c\u5e95\uff0c\u975e\u5fc5\u987b *\/\r\n  border-shape: inset(0 -16px -16px) circle(0);\r\n  border-color: skyblue;\r\n}<\/pre>\n
\u91ca\u4e49<\/h4>\n
CSS border-shape<\/code> \u5c5e\u6027\u63a5\u53d7\u4e24\u4e2a\u5f62\u72b6\u503c\uff0c\u524d\u8005\u8868\u793a\u5916\u90e8\u5f62\u72b6\uff0c\u540e\u8005\u8868\u793a\u5185\u90e8\u5f62\u72b6\u3002<\/p>\n
inset()<\/code> \u51fd\u6570\u662f CSS Shapes \u56fe\u5f62\u76f8\u5173\u7684\u57fa\u7840\u5f62\u72b6\u51fd\u6570\uff0c\u7528\u6765\u521b\u5efa\u5185\u51f9\u77e9\u5f62\u88c1\u526a\u533a\u57df\u3002<\/p>\n
inset(top right bottom left round radius);<\/pre>\n
\u5176\u4e2d\uff0ctop right bottom left<\/code>\u8868\u793a\u7684\u662f\u56db\u4e2a\u65b9\u5411\u5411\u5185\u6536\u7f29\u7684\u8ddd\u79bb\uff0c\u6ce8\u610f\uff0c\u662f\u5185\u7f29\u7684\u8ddd\u79bb\uff0c\u652f\u6301\u7b80\u5199\uff0c\u7b80\u5199\u89c4\u5219\u548c margin \/padding \u4e00\u81f4\u3002<\/p>\n
\u8fd9\u91cc\uff0cinset(0 -16px -16px)<\/code>\u4e2d\u7684\u503c\u662f\u8d1f\u6570\uff0c\u56e0\u6b64\uff0c\u5f62\u72b6\u662f\u5916\u6269\uff0c\u800c\u975e\u5185\u7f29\uff0c\u6269\u5c55\u65b9\u5411\u662f\u5de6\u53f3\u548c\u5e95\u90e8\u3002<\/p>\n
\u4e8e\u662f\uff0c\u53ef\u4ee5\u6b63\u597d\u8986\u76d6\u5916\u90e8\u5bb9\u5668\u8bbe\u7f6e\u768416px<\/code> padding\u5927\u5c0f\u3002<\/p>\n
circle(0)<\/code>\u8868\u793a\u7684\u662f\u5185\u90e8\u5f62\u72b6\uff0c\u8868\u793a\u4e00\u4e2a\u653e\u7f6e\u5728\u4e2d\u5fc3\u7684\u96f6\u534a\u5f84\u5706\u3002<\/p>\n
\u96f6\u534a\u5f84\u5706\u7b49\u4e8e\u6ca1\u6709\u56fe\u5f62\uff0c\u4f5c\u7528\u662f\u4fdd\u8bc1\u5916\u90e8\u5f62\u72b6\u53ef\u4ee5\u8fde\u5185\u90e8\u4e5f\u5b8c\u5168\u586b\u5145\u3002<\/p>\n
\u6240\u4ee5\uff0c\u4e0a\u8ff0\u4ee3\u7801\u4e2d\u7684background: skyblue<\/code>\u5176\u5b9e\u662f\u53ef\u4ee5\u5220\u9664\u7684\u3002<\/p>\n
\u5173\u4e8eborder-shape<\/h4>\n
border-shape<\/code>\u662f\u4e2a\u5f88\u5b9e\u7528\u7684\u65b0\u7279\u6027\uff0c\u6211\u4e09\u4e2a\u6708\u524d\u5c31\u4ecb\u7ecd\u8fc7\u4e86\uff0c\u6709\u5174\u8da3\u8bbf\u95ee\u8fd9\u91cc\u4e86\u89e3\uff1a\u5168\u65b0\u7684CSS border-shape\u5c5e\u6027\u7b80\u4ecb<\/a><\/p>\n
\u6211\u770b\u4e86\u4e0b\uff0c\u4e09\u4e2a\u6708\u8fc7\u53bb\u4e86\uff0c\u76ee\u524d\u8fd8\u662f\u4ec5Chrome\u6d4f\u89c8\u5668\u652f\u6301\u3002<\/p>\n
\"border-shape<\/p>\n
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\u4e09\u3001\u4f20\u7edf\u65b9\u6cd5border-image<\/h3>\n
border-image<\/code>\u6269\u5c55\u5143\u7d20\u7684\u56fe\u5f62\u533a\u57df\uff0c\u8fd9\u4e2a\u6211\u5f88\u591a\u5e74\u524d\u5c31\u4ecb\u7ecd\u8fc7\uff0c\u5305\u62ec\u6211\u7684\u8457\u4f5c\u300aCSS\u65b0\u4e16\u754c\u300b\u4e2d\u4e5f\u6709\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u662fCSS\u91cc\u9762\u6781\u4e3a\u7f55\u89c1\u7684\u4e0d\u5f71\u54cd\u6392\u7248\u60c5\u51b5\u4e0b\u62d3\u5c55\u5143\u7d20\u7684\u6e32\u67d3\u533a\u57df\u7684\u5c5e\u6027\u3002<\/p>\n
\u552f\u4e00\u7684\u95ee\u9898\u5c31\u662f\u8bed\u6cd5\u590d\u6742\u4e86\u4e9b\uff0c\u4e0d\u8fc7\u73b0\u5728\u6709AI\u4e86\uff0c\u5927\u5bb6\u53ea\u8981\u77e5\u9053border-image<\/code>\u53ef\u4ee5\u505a\u8fd9\u6837\u7684\u4e8b\u60c5\uff0c\u7136\u540e\u8ba9AI\u53bb\u5904\u7406\u5c31\u597d\u4e86\u3002<\/p>\n
\u8be6\u89c1\u6b64\u6587\uff1a\u88ab\u4f4e\u4f30\u7684border-image\u5c5e\u6027<\/a><\/p>\n
\u5728\u672c\u4f8b\u4e2d\uff0c\u60f3\u8981\u6269\u5c55\u5143\u7d20\u5de6\u53f3\u548c\u4e0b\u65b9\u7684\u80cc\u666f\u8272\uff0c\u53ef\u4ee5\u8fd9\u4e48\u8bbe\u7f6e\u3002<\/p>\n
footer {\r\n  border-image: conic-gradient(skyblue) fill 0\/\/0 16px 16px;\r\n}<\/pre>\n
\u5982\u679c\u4f60\u60f3\u88c5\u903c\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528image()<\/code>\u51fd\u6570\u3002<\/p>\n
image()<\/code>\u51fd\u6570\u4e5f\u662f\u4e2a\u65b0\u7279\u6027\uff0c\u539f\u672c\u7684\u8bed\u6cd5\u652f\u6301URL\u56fe\u50cf\u5916\u52a0\u526a\u88c1\uff0c\u4f8b\u5982\uff1a<\/p>\n
image(\"image1.jpg#xywh=40,0,20,20\")<\/pre>\n
\u6211\u5b9e\u9645\u6d4b\u4e0b\u6765\uff0c\u76ee\u524d\u4ec5\u652f\u6301\u80cc\u666f\u8272\uff0cChrome\u548cFirefox\u6d4f\u89c8\u5668\u90fd\u652f\u6301\uff0cSafari\u4e0d\u652f\u6301\u3002<\/p>\n
\u81f3\u4e8e\u5177\u4f53\u7684\u517c\u5bb9\u6027\u6570\u636e\uff0c\u6211\u5e76\u6ca1\u6709\u627e\u5230\u3002<\/p>\n
\u4ee3\u7801\u4f7f\u7528\u793a\u610f\uff1a<\/p>\n
footer {\r\n  border-image: image(skyblue) fill 0\/\/0 16px 16px;\r\n}<\/pre>\n
\u6548\u679c\u662f\u4e00\u6837\u7684\u3002<\/p>\n
\"\u5e95\u90e8\u80cc\u666f\u8272\u6269\u5c55\u6548\u679c\u793a\u610f\"<\/p>\n
\u56db\u3001\u7ed3\u8bed<\/h3>\n
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conic-gradient<\/code>\u662f\u9525\u5f62\u6e10\u53d8\uff0c\u4e5f\u662f\u975e\u5e38\u5b9e\u7528\u7684\u6e10\u53d8\uff0c\u53ef\u4ee5\u7528\u6765\u7ed8\u5236\u997c\u56fe\uff0cloading\u56fe\u5f62\u6216\u8005\u68cb\u76d8\u7f51\u683c\uff0c\u8be6\u89c1\u6b64\u6587\uff1aCSS conic-gradient()\u9525\u5f62\u6e10\u53d8\u7b80\u4ecb<\/a><\/p>\n
\u4e0d\u8fc7\u5f88\u591a\u5f00\u53d1\u4eba\u5458\u5bf9\u9525\u5f62\u6e10\u53d8\u638c\u63e1\u5e76\u4e0d\u719f\uff0c\u8fd9\u91cc\u66ff\u6362\u6210\u7ebf\u6027\u6e10\u53d8\u4e5f\u662f\u53ef\u4ee5\u7684\uff0c\u53c2\u8003\u5982\u4e0b\uff1a<\/p>\n
footer {\r\n  border-image: linear-gradient(skyblue) fill 0\/\/0 16px 16px;\r\n}<\/pre>\n
\u6ce8\u610f\uff0cconic-gradient(skyblue)<\/code>\u548clinear-gradient(skyblue)<\/code>\u6a21\u62df\u7eaf\u8272\u80cc\u666f\u7684\u8bed\u6cd5\u4e00\u5f00\u59cb\u4e0d\u662f\u8fd9\u4e48\u7cbe\u7b80\u7684\uff0c\u5982\u679c\u4f60\u7684\u9879\u76ee\u5bf9\u517c\u5bb9\u6027\u8981\u6c42\u6bd4\u8f83\u9ad8\uff0c\u7a33\u59a5\u671f\u95f4\uff0c\u8fd8\u662f\u4f7f\u7528\u5b8c\u6574\u5199\u6cd5conic-gradient(skyblue 0 0)<\/code>\u548clinear-gradient(skyblue, skyblue)<\/code>\u3002<\/p>\n
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\"\u518d\u89c1\"<\/p>\n
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\n\u672c\u6587\u5730\u5740\uff1ahttps:\/\/www.zhangxinxu.com\/wordpress\/?p=12438<\/a><\/p>\n
\uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"
\"CSS\u80cc\u666f\u8272\u5355\u5411\u6269\u5c55\u6280\u672f\"<\/p>\n
\u4e0d\u77e5\u9053\u4e86\u5427\uff0c\u9664\u4e86\u4f20\u7edf\u7684border-image\u5c5e\u6027\uff0c\u73b0\u5728border-shape\u5c5e\u6027\u4e5f\u80fd\u8f7b\u677e\u5b9e\u73b0\u80cc\u666f\u8272\u4efb\u610f\u65b9\u5411\u7684\u6269\u5c55\uff0c\u662f\u4e0d\u5360\u636e\u5e03\u5c40\u5c3a\u5bf8\u7684\u90a3\u79cd\u54e6\u3002\ud83d\ude0f<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[298,2119,1179,2170,1672,1180],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/12438"}],"collection":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/comments?post=12438"}],"version-history":[{"count":8,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/12438\/revisions"}],"predecessor-version":[{"id":12465,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/12438\/revisions\/12465"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=12438"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=12438"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=12438"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}