{"id":65,"date":"2013-12-23T21:26:14","date_gmt":"2013-12-23T13:26:14","guid":{"rendered":"http:\/\/web.jofar.cn\/?p=65"},"modified":"2013-12-23T21:26:14","modified_gmt":"2013-12-23T13:26:14","slug":"background-position-%e7%94%a8%e6%b3%95%e8%af%a6%e7%bb%86%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/web.jofar.cn\/?p=65","title":{"rendered":"background-position \u7528\u6cd5\u8be6\u7ec6\u4ecb\u7ecd"},"content":{"rendered":"

\u8bed\u6cd5\uff1a<\/strong>
\nbackground-position : length || length
\nbackground-position : position || position
\n\u53d6\u503c\uff1a<\/strong>
\nlength? :\u3000 \u767e\u5206\u6570 | \u7531\u6d6e\u70b9\u6570\u5b57\u548c\u5355\u4f4d\u6807\u8bc6\u7b26\u7ec4\u6210\u7684\u957f\u5ea6\u503c\u3002\u8bf7\u53c2\u9605 \u957f\u5ea6\u5355\u4f4d
\nposition? :\u3000 top | center | bottom | left | center | right<\/p>\n

\u8bf4\u660e\uff1a<\/strong>
\n\u8bbe\u7f6e\u6216\u68c0\u7d22\u5bf9\u8c61\u7684\u80cc\u666f\u56fe\u50cf\u4f4d\u7f6e\u3002\u5fc5\u987b\u5148\u6307\u5b9a background-image \u5c5e\u6027\u3002
\n\u8be5\u5c5e\u6027\u5b9a\u4f4d\u4e0d\u53d7\u5bf9\u8c61\u7684\u8865\u4e01\u5c5e\u6027( padding )\u8bbe\u7f6e\u5f71\u54cd\u3002
\n\u9ed8\u8ba4\u503c\u4e3a\uff1a 0% 0% \u3002\u6b64\u65f6\u80cc\u666f\u56fe\u7247\u5c06\u88ab\u5b9a\u4f4d\u4e8e\u5bf9\u8c61\u4e0d\u5305\u62ec\u8865\u4e01( padding )\u7684\u5185\u5bb9\u533a\u57df\u7684\u5de6\u4e0a\u89d2\u3002
\n\u5982\u679c\u53ea\u6307\u5b9a\u4e86\u4e00\u4e2a\u503c\uff0c\u8be5\u503c\u5c06\u7528\u4e8e\u6a2a\u5750\u6807\u3002\u7eb5\u5750\u6807\u5c06\u9ed8\u8ba4\u4e3a 50% \u3002\u5982\u679c\u6307\u5b9a\u4e86\u4e24\u4e2a\u503c\uff0c\u7b2c\u4e8c\u4e2a\u503c\u5c06\u7528\u4e8e\u7eb5\u5750\u6807\u3002
\n\u5982\u679c\u8bbe\u7f6e\u503c\u4e3a right center \uff0c\u56e0\u4e3a right \u4f5c\u4e3a\u6a2a\u5750\u6807\u503c\u5c06\u4f1a\u8986\u76d6 center \u503c\uff0c\u6240\u4ee5\u80cc\u666f\u56fe\u7247\u5c06\u88ab\u5c45\u53f3\u5b9a\u4f4d\u3002
\n\u5bf9\u5e94\u7684\u811a\u672c\u7279\u6027\u4e3a backgroundPosition\u3002<\/p>\n

\u6ce8\uff1a<\/strong>?\u672c\u6587\u4e2d\u4f7f\u7528\u7684\u56fe\u7247\u5927\u5c0f\u4e3a 300px*120px\uff0c\u4e3a\u4e86\u80fd\u5f88\u6e05\u6670\u7684\u8868\u8fbe\u56fe\u5f62\u7684\u54ea\u90e8\u5206\u88ab\u9690\u85cf\u4e86\uff0c\u6309\u7167\u56fe\u7247\u7684\u5927\u5c0f\u5e73\u5747\u5206\u6210\u4e869\u7b49\u4efd\u3002\u540c\u65f6\u80cc\u666f\u56fe\u7247\u5bb9\u5668\u533a\u57df\u7ed8\u5236\u51fa\u7eff\u8272\u8fb9\u6846\u6e05\u6670\u663e\u793a\u5bb9\u5668\u7684\u8303\u56f4\u3002
\n1\u3001background-position:0 0;
\n\u80cc\u666f\u56fe\u7247\u7684\u5de6\u4e0a\u89d2\u5c06\u4e0e\u5bb9\u5668\u5143\u7d20\u7684\u5de6\u4e0a\u89d2\u5bf9\u9f50\u3002\u8be5\u8bbe\u7f6e\u4e0ebackground-position:left top;\u6216\u8005background-position:0% 0%;\u8bbe\u7f6e\u7684\u6548\u679c\u662f\u4e00\u81f4\u7684\u3002\u4f8b\u5982\uff1a<\/p>\n

.container{
\nwidth:300px;
\nheight:150px;
\nbackground:transparent url(bg.jpg) no-repeat scroll 0 0;
\nborder:5px solid green;
\n}<\/p>\n

\u6548\u679c\u5982\u4e0b\u56fe1\uff1a<\/p>\n

\"\"<\/p>\n

\u56fe 1<\/p>\n

2\u3001\u8be5\u5c5e\u6027\u5b9a\u4f4d\u4e0d\u53d7\u5bf9\u8c61\u7684\u8865\u4e01\u5c5e\u6027( padding )\u8bbe\u7f6e\u5f71\u54cd\u3002<\/p>\n

\u4f8b\u5982\uff0c\u6211\u4eec\u7ed9\u5bb9\u5668\u5143\u7d20\u589e\u52a0padding\u503c\uff0c\u80cc\u666f\u56fe\u7247\u7684\u5de6\u4e0a\u89d2\u8fd8\u662f\u4e0e\u5bb9\u5668\u5143\u7d20\u7684\u5de6\u4e0a\u89d2\u5bf9\u9f50\u3002\u5728\u6b64\u5904\u53ea\u662f\u5f71\u54cd\u5230\u4e86\u5bb9\u5668\u5143\u7d20\u7684\u9ad8\u5ea6\u548c\u5bbd\u5ea6\u3002<\/p>\n

.container{
\nwidth:300px;
\nheight:150px;
\nbackground:transparent url(bg.jpg) no-repeat scroll 0 0;
\nborder:5px solid green;
\npadding:50px;
\n}<\/p>\n

\u6548\u679c\u5982\u56fe2\uff1a<\/p>\n

\"\"<\/p>\n

\u56fe 2<\/p>\n

3\u3001background-position:-70px -40px;<\/p>\n

\u56fe\u7247\u4ee5\u5bb9\u5668\u5de6\u4e0a\u89d2\u4e3a\u53c2\u8003\u5411\u5de6\u504f\u79fb70px\uff0c\u5411\u4e0a\u504f\u79fb 40px\uff0c\u793a\u4f8b\uff1a<\/p>\n

.container{
\nwidth:300px;
\nheight:150px;
\nbackground:transparent url(bg.jpg) no-repeat scroll -70px -40px;
\nborder:5px solid green;
\n}<\/p>\n

\u6548\u679c\u5982\u56fe3\uff1a<\/p>\n

\"\"<\/p>\n

\u56fe 3<\/p>\n

4\u3001background-position:70px 40px;<\/p>\n

\u56fe\u7247\u4ee5\u5bb9\u5668\u5de6\u4e0a\u89d2\u4e3a\u53c2\u8003\u5411\u53f3\u504f\u79fb70px\uff0c\u5411\u4e0b\u504f\u79fb 40px\uff0c\u793a\u4f8b\uff1a<\/p>\n

.container{
\nwidth:300px;
\nheight:150px;
\nbackground:transparent url(bg.jpg) no-repeat scroll 70px 40px;
\nborder:5px solid green;
\n}<\/p>\n

\u6548\u679c\u5982\u56fe4\uff1a<\/p>\n

\"\"<\/p>\n

\u56fe 4<\/p>\n

5\u3001background-position:50% 50%;<\/p>\n

\u56fe\u7247\u6c34\u5e73\u548c\u5782\u76f4\u5c45\u4e2d\u3002\u4e0e background-position:center center;\u6548\u679c\u7b49\u540c\u3002<\/p>\n

\u7b49\u540c\u4e8ex\uff1a{\u5bb9\u5668(container)\u7684\u5bbd\u5ea6\u2015\u80cc\u666f\u56fe\u7247\u7684\u5bbd\u5ea6}*x\u767e\u5206\u6bd4\uff0c\u8d85\u51fa\u7684\u90e8\u5206\u9690\u85cf\u3002
\n\u7b49\u540c\u4e8ey\uff1a{\u5bb9\u5668(container)\u7684\u9ad8\u5ea6\u2015\u80cc\u666f\u56fe\u7247\u7684\u9ad8\u5ea6}*y\u767e\u5206\u6bd4\uff0c\u8d85\u51fa\u7684\u90e8\u5206\u9690\u85cf\u3002<\/p>\n

\u4f8b\u5982\uff1a .container{
\nwidth:300px;
\nheight:150px;
\nbackground:transparent url(bg.jpg) no-repeat scroll 50% 50%;
\nborder:5px solid green;
\n}<\/p>\n

\u5176x=(300-210)*50%=45px;<\/p>\n

y=(150-120)*50%=15px;<\/p>\n

\u6548\u679c\u5982\u56fe5\uff1a<\/p>\n

\"\"<\/p>\n

\u56fe 5<\/p>\n

\u7531\u4e8e\u8d85\u51fa\u90e8\u5206\u522b\u5f80\u4e24\u7aef\u5ef6\u4f38\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u5148\u5236\u4f5c\u4e00\u5f20\u5bbd\u5ea6\u8db3\u591f\u5bbd\u56fe\u7247\u8bbe\u7f6e\u6c34\u5e73\u503c\u4e3a50%\uff0c\u8fd9\u6837\u53ef\u4ee5\u7528\u6765\u9002\u5e94\u4e0d\u540c\u7684\u6d4f\u89c8\u5668\uff0c\u4f7f\u5f97\u56fe\u7247\u6c34\u5e73\u5145\u6ee1\u6d4f\u89c8\u5668\u7a97\u53e3\u5e76\u4e14\u5c45\u4e2d\u3002\u66ff\u4ee3margin:50 auto\u7684\u529f\u80fd\u3002<\/p>\n

6\u3001background-position:-50% -50%;<\/p>\n

\u7b49\u540c\u4e8ex\uff1a-{\u5bb9\u5668(container)\u7684\u5bbd\u5ea6\u2015\u80cc\u666f\u56fe\u7247\u7684\u5bbd\u5ea6}*x\u767e\u5206\u6bd4\uff0c\u8d85\u51fa\u7684\u90e8\u5206\u9690\u85cf\u3002
\n\u7b49\u540c\u4e8ey\uff1a-{\u5bb9\u5668(container)\u7684\u9ad8\u5ea6\u2015\u80cc\u666f\u56fe\u7247\u7684\u9ad8\u5ea6}*y\u767e\u5206\u6bd4\uff0c\u8d85\u51fa\u7684\u90e8\u5206\u9690\u85cf\u3002<\/p>\n

.container{
\nwidth:300px;
\nheight:150px;
\nbackground:transparent url(bg.jpg) no-repeat scroll -50% -50%;
\nborder:5px solid green;
\n}<\/p>\n

\u6548\u679c\u5982\u56fe6\uff1a<\/p>\n

\"\"<\/p>\n

\u56fe 6<\/p>\n

7\u3001background-position:100% 100%;<\/p>\n

\u56fe\u7247\u5904\u4e8e\u5bb9\u5668\u5143\u7d20\u7684\u53f3\u4e0b\u89d2\uff0c\u4e0e background-position:right bottom;\u6548\u679c\u7b49\u540c\u3002<\/p>\n

\u793a\u4f8b\uff1a<\/p>\n

.container{
\nwidth:300px;
\nheight:150px;
\nbackground:transparent url(bg.jpg) no-repeat scroll 100% 100%;
\nborder:5px solid green;
\n}<\/p>\n

\u6548\u679c\u5982\u56fe7\uff1a<\/p>\n

\"\"<\/p>\n

\u56fe 7<\/p>\n","protected":false},"excerpt":{"rendered":"

\u8bed\u6cd5\uff1a background-position : length || length background-p\u2026 Read More »<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,4],"tags":[],"class_list":["post-65","post","type-post","status-publish","format-standard","hentry","category-css","category-design-pursuit"],"_links":{"self":[{"href":"https:\/\/web.jofar.cn\/index.php?rest_route=\/wp\/v2\/posts\/65","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/web.jofar.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/web.jofar.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/web.jofar.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/web.jofar.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=65"}],"version-history":[{"count":0,"href":"https:\/\/web.jofar.cn\/index.php?rest_route=\/wp\/v2\/posts\/65\/revisions"}],"wp:attachment":[{"href":"https:\/\/web.jofar.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=65"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/web.jofar.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=65"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/web.jofar.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=65"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}