{"id":22055,"date":"2013-06-17T10:25:01","date_gmt":"2013-06-17T17:25:01","guid":{"rendered":"http:\/\/css-tricks.com\/?page_id=22055"},"modified":"2022-05-31T07:16:02","modified_gmt":"2022-05-31T14:16:02","slug":"font-weight","status":"publish","type":"page","link":"https:\/\/css-tricks.com\/almanac\/properties\/f\/font-weight\/","title":{"rendered":"font-weight"},"content":{"rendered":"\n<p>The <code>font-weight<\/code> property sets the weight, or thickness, of a font and is dependent either on available font faces within a font family or weights defined by the browser.<\/p>\n\n\n\n<pre rel=\"CSS\" class=\"wp-block-csstricks-code-block language-css\" data-line=\"\"><code markup=\"tt\">span {\n  font-weight: bold;\n}<\/code><\/pre>\n\n\n\n<p>The <code>font-weight<\/code> property accepts either a keyword value or predefined numeric value. The available keywords are:<\/p>\n\n\n\n<ul><li><code>normal<\/code><\/li><li><code>bold<\/code><\/li><li><code>bolder<\/code><\/li><li><code>lighter<\/code><\/li><\/ul>\n\n\n\n<p>The available numeric values are:<\/p>\n\n\n\n<ul><li><code>100<\/code><\/li><li><code>200<\/code><\/li><li><code>300<\/code><\/li><li><code>400<\/code><\/li><li><code>500<\/code><\/li><li><code>600<\/code><\/li><li><code>700<\/code><\/li><li><code>800<\/code><\/li><li><code>900<\/code><\/li><\/ul>\n\n\n\n<p>The keyword value <code>normal<\/code> maps to the numeric value <code>400<\/code> and the value <code>bold<\/code> maps to <code>700<\/code>.<\/p>\n\n\n\n<p>In order to see any effect using values other than <code>400<\/code> or <code>700<\/code>, the font being used must have built-in faces that match those specified weights.<\/p>\n\n\n\n<p>If a font has a bold (&#8220;700&#8221;) or normal (&#8220;400&#8221;) version as part of the font family, the browser will use that. If those are not available, the browser will mimic its own bold or normal version of the font. It will not mimic the other unavailable weights. Fonts often use names like &#8220;Regular&#8221; and &#8220;Light&#8221; to identify any alternate font weights.<\/p>\n\n\n\n<p>The following demo demonstrates the use of the alternate weight values:<\/p>\n\n\n\n<div class=\"wp-block-cp-codepen-gutenberg-embed-block cp_embed_wrapper\"><iframe id=\"cp_embed_DKmabd\" src=https://css-tricks.com/"////codepen.io//anon//embed//DKmabd?height=450&amp;theme-id=1&amp;slug-hash=DKmabd&amp;default-tab=result\%22 height=\"450\" scrolling=\"no\" frameborder=\"0\" allowfullscreen allowpaymentrequest name=\"CodePen Embed DKmabd\" title=\"CodePen Embed DKmabd\" class=\"cp_embed_iframe\" style=\"width:100%;overflow:hidden\">CodePen Embed Fallback<\/iframe><\/div>\n\n\n\n<p>The above demo is using the free font <a href=https://css-tricks.com/"http:////www.google.com//fonts//specimen//Open+Sans/" rel=\"noopener\">Open Sans<\/a>, embedded using the Google Web Fonts API. The font is loaded with all the available font weights and so, using the <code>font-weight<\/code> property, the different available weights are displayed as described by each paragraph&#8217;s text. The unavailable weights simply display the logically closest weight.<\/p>\n\n\n\n<p>Common fonts like Arial, Helvetica, Georgia, etc. do not have weights other than <code>400<\/code> and <code>700<\/code>. So the same demo displayed with one of those fonts would display only two weights in the nine paragraphs.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"using-bolder-and-lighter-keywords\">Using &#8220;bolder&#8221; and &#8220;lighter&#8221; keywords<\/h3>\n\n\n<p>The keyword values <code>bolder<\/code> and <code>lighter<\/code> are relative to the computed font weight of the parent element. The browser will look for the closest &#8220;bolder&#8221; or &#8220;lighter&#8221; weight, depending on what is available in the font family, otherwise it will simply choose &#8220;400&#8221; or &#8220;700&#8221;, depending on which makes the most sense.<\/p>\n\n\n\n<p>Child elements will not inherit the &#8220;bolder&#8221; and &#8220;lighter&#8221; keyword values, but instead will inherit the computed weight.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"related-properties\">Related Properties<\/h3>\n\n\n<ul><li><a href=https://css-tricks.com/"https:////css-tricks.com//almanac//properties//f//font///">font<\/a><\/li><li><a href=https://css-tricks.com/"https:////css-tricks.com//almanac//properties//f//font-stretch///">font-stretch<\/a><\/li><li><a href=https://css-tricks.com/"https:////css-tricks.com//almanac//properties//f//font-variant///">font-variant<\/a><\/li><li><a href=https://css-tricks.com/"https:////css-tricks.com//almanac//properties//f//font-style///">font-style<\/a><\/li><li><a href=https://css-tricks.com/"https:////css-tricks.com//almanac//properties//l//line-height///">line-height<\/a><\/li><li><a href=https://css-tricks.com/"https:////css-tricks.com//almanac//properties//f//font-size///">font-size<\/a><\/li><li><a href=https://css-tricks.com/"https:////css-tricks.com//almanac//properties//f//font-family///">font-family<\/a><\/li><\/ul>\n\n\n<h3 class=\"wp-block-heading\" id=\"browser-support\">Browser support<\/h3>\n\n\n<script src=https://css-tricks.com/"https:////cdn.jsdelivr.net//gh//ireade//caniuse-embed//public//caniuse-embed.min.js/"><\/script>\n<p class=\"ciu_embed\" data-feature=\"mdn-css__properties__font-weight\" data-periods=\"future_1,current,past_1,past_2\" data-accessible-colours=\"false\">\n\n\n<h3 class=\"wp-block-heading\" id=\"other-resources\">Other resources<\/h3>\n\n\n<ul><li><a href=https://css-tricks.com/"http:////www.w3.org//TR//css3-fonts//#font-weight-prop\" rel=\"noopener\">font-weight on W3C<\/a><\/li><li><a href=https://css-tricks.com/"https:////developer.mozilla.org//en-US//docs//Web//CSS//font-weight/" rel=\"noopener\">font-weight on MDN<\/a><\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>The font-weight property sets the weight, or thickness, of a font and is dependent either on available font faces within [&hellip;]<\/p>\n","protected":false},"author":7178,"featured_media":0,"parent":13921,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"page-almanac-single.php","meta":{"_acf_changed":false,"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"sig_custom_text":"","sig_image_type":"featured-image","sig_custom_image":0,"sig_is_disabled":false,"inline_featured_image":false,"c2c_always_allow_admin_comments":false,"footnotes":"","_share_on_mastodon":"0","_share_on_mastodon_status":"%title% %permalink%"},"tags":[],"acf":[],"share_on_mastodon":{"url":"","error":""},"jetpack_sharing_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/css-tricks.com\/wp-json\/wp\/v2\/pages\/22055"}],"collection":[{"href":"https:\/\/css-tricks.com\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/css-tricks.com\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/css-tricks.com\/wp-json\/wp\/v2\/users\/7178"}],"replies":[{"embeddable":true,"href":"https:\/\/css-tricks.com\/wp-json\/wp\/v2\/comments?post=22055"}],"version-history":[{"count":6,"href":"https:\/\/css-tricks.com\/wp-json\/wp\/v2\/pages\/22055\/revisions"}],"predecessor-version":[{"id":366138,"href":"https:\/\/css-tricks.com\/wp-json\/wp\/v2\/pages\/22055\/revisions\/366138"}],"up":[{"embeddable":true,"href":"https:\/\/css-tricks.com\/wp-json\/wp\/v2\/pages\/13921"}],"wp:attachment":[{"href":"https:\/\/css-tricks.com\/wp-json\/wp\/v2\/media?parent=22055"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/css-tricks.com\/wp-json\/wp\/v2\/tags?post=22055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}