那些神奇的CSS特性，你都有用过么？
@charset "UTF-8";
.markdown-body { line-height: 1.75; font-weight: 400; font-size: 15px; overflow-x: hidden; color: rgba(43, 43, 43, 1); font-family: -apple-system, system-ui, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Hiragino Sans GB, Microsoft YaHei, Arial, sans-serif; background-image: linear-gradient(90deg, rgba(159, 219, 252, 0.15) 3%, rgba(0, 0, 0, 0) 0), linear-gradient(1turn, rgba(159, 219, 252, 0.15) 3%, rgba(0, 0, 0, 0) 0); background-size: 20px 20px; background-position: center }
.markdown-body h1, .markdown-body h2, .markdown-body h3, .markdown-body h4, .markdown-body h5, .markdown-body h6 { padding: 30px 0; margin-top: 35px; margin-bottom: 10px; color: rgba(77, 208, 225, 1) }
.markdown-body h1 { font-size: 30px; text-align: center; position: relative; width: max-content; margin: 0 auto }
.markdown-body h1:before { position: absolute; content: ""; z-index: -1; top: -20px; height: 100%; width: 100px; left: 0; right: 0; margin: 0 auto; background: 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") center / 64px 64px no-repeat; opacity: 0.84 }
.markdown-body h1:after { position: absolute; content: ""; width: 150%; left: -25%; height: 50%; bottom: 12px; border-radius: 50%; background: linear-gradient(rgba(0, 0, 0, 0) 80%, rgba(77, 208, 225, 0.8)); opacity: 0.6; animation: 6s linear infinite h1animate }
@keyframes h1Animate { 0% { background-position: right bottom } 50% { background-position: right } 100% { background-position: right bottom } }
.markdown-body h2 { display: block; border-bottom: 4px solid rgba(77, 208, 225, 1); position: relative; font-size: 24px; padding: 12px 32px; margin: 30px 0 }
.markdown-body h2:before { width: 24px; height: 24px; left: 0; top: 0; margin: auto; background-size: 24px 24px; background-image: url("data:image/png;base64,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") }
.markdown-body h2:after, .markdown-body h2:before { content: ""; display: block; position: absolute; bottom: 0 }
.markdown-body h2:after { right: 0; width: 400px; height: 10px; border-top-right-radius: 24px; background: linear-gradient(90deg, rgba(255, 255, 255, 1), rgba(77, 208, 225, 1)); max-width: 50vw }
.markdown-body h3 { margin: 30px 0; font-size: 18px; position: relative; padding: 4px 32px; width: max-content }
.markdown-body h3:before { border-bottom: 2px solid rgba(77, 208, 225, 1); width: 100%; content: ""; display: block; height: 28px; position: absolute; left: 0; top: 0; bottom: -2px; margin: auto; background-size: 28px 28px; background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAABRklEQVRYR2NkGGDAOMD2M4w6YDQERkNg+ITAppcfY/8zMv3wF+NdTUrZQpUQ2PT6cz8Dw/8CkMWMDIwNvqK8jcQ6gmIHNN19EaXPx1XPyMCghrCUKcpPlGc5MY6gyAE+Fx52MjL8j3cU5a1UYWXtZGBkEAVb+p8hxU+Mby5NHQCxnKEMaskzJ37uFmUetkmMjAzrfUX4woixHBJlZAA0y2EmPPYU4enLkhGeQIqRJDsAh+UgO7duNpD3IcVykkOA2paT5ABaWE60A2hlOdEO8D3/4CMDIyMfWvySFefoaYSoROh74eFXBgYGLiTNVLGc+BC48PAnAwMDG9QBVLOcaAd8P5ox+x/jf5AjGLgYfnwnKqv9/8/PwPO/kFF/MSj0cAKiouD/0bgYoixFU8RovWgJIX1EOYCQIZTIjzpgNARGQ2DAQwAAvHBaIdB7zxsAAAAASUVORK5CYII="); background-repeat: no-repeat; animation: 2s infinite alternate h3animationbefore }
@keyframes h3AnimationBefore { 0% { width: 28px } 25% { width: 100% } 50% { width: 100% } 100% { width: 100% } }
.markdown-body h3:after { content: ""; display: block; width: 28px; height: 28px; position: absolute; border: 2px solid rgba(77, 208, 225, 1); border-radius: 50%; right: -15px; top: 0; bottom: 0; margin: auto; background-size: 28px 28px; background-image: url("data:image/png;base64,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"); animation: 2s infinite alternate h3animationafter }
@keyframes h3AnimationAfter { 0% { } 10% { } 50% { transform: rotate(-1turn) } 100% { transform: rotate(-1turn) } }
.markdown-body h4 { font-size: 16px }
.markdown-body h5 { font-size: 15px }
.markdown-body h6 { margin-top: 5px }
.markdown-body p { line-height: inherit; margin: 22px 0; letter-spacing: 2px; font-size: 14px; word-spacing: 2px }
.markdown-body img { max-width: 80%; border-radius: 6px; display: block; margin: 20px auto !important; object-fit: contain; box-shadow: 0 0 16px rgba(110, 110, 110, 0.45) }
.markdown-body figcaption { display: block; font-size: 13px; color: rgba(43, 43, 43, 1) }
.markdown-body figcaption:before { content: ""; background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgBAMAAACBVGfHAAAAGFBMVEVHcExAuPtAuPpAuPtAuPpAuPtAvPxAuPokzOX5AAAAB3RSTlMAkDLqNegkoiUM7wAAAGBJREFUKM9jYBhcgMkBTUDVBE1BeDGqEtXychNUBeXlKEqACsrLQxB8lnCQQClCiWt5OYoSiAIkJVAF5eVBqAqAShTAAs7l5ShKWMwRAmAlSArASpAVgJUkCqIAscESHwCVVjMBK9JnbQAAAABJRU5ErkJggg=="); display: inline-block; width: 18px; height: 18px; background-size: 18px; background-repeat: no-repeat; background-position: center; margin-right: 5px; margin-bottom: -5px }
.markdown-body hr { border-top: 1px solid rgba(77, 208, 225, 1); border-right: none; border-bottom: none; border-left: none; margin-top: 32px; margin-bottom: 32px }
.markdown-body del { color: rgba(77, 208, 225, 1) }
.markdown-body code { border-radius: 2px; overflow-x: auto; background-color: rgba(77, 208, 225, 0.08); color: rgba(38, 198, 218, 1); padding: 0.195em 0.4em }
.markdown-body pre { font-family: Menlo, Monaco, Consolas, Courier New, monospace; overflow: auto; position: relative; line-height: 1.75; box-shadow: 0 0 8px rgba(110, 110, 110, 0.45); border-radius: 4px; margin: 16px }
.markdown-body pre:before { content: ""; display: block; height: 30px; width: 100%; margin-bottom: -7px; background: url("data:image/png;base64,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") 10px 10px / 40px no-repeat }
.markdown-body pre>code { font-size: 12px; padding: 15px 12px; margin: 0; word-break: normal; display: block; overflow-x: auto; color: rgba(51, 51, 51, 1); background: rgba(248, 248, 248, 1) }
.markdown-body a { color: rgba(77, 208, 225, 1); border-bottom: 1px solid rgba(77, 208, 225, 1); font-weight: 400; text-decoration: none; margin: 0 4px }
.markdown-body a:active, .markdown-body a:hover { background-color: rgba(77, 208, 225, 0.1) }
.markdown-body strong { color: rgba(38, 198, 218, 1) }
.markdown-body strong:before { content: "「" }
.markdown-body strong:after { content: "」" }
.markdown-body em { font-style: normal; color: rgba(77, 208, 225, 1); font-weight: 700 }
.markdown-body table { display: inline-block !important; font-size: 12px; width: auto; max-width: 100%; overflow: auto; border: 1px solid rgba(246, 246, 246, 1) }
.markdown-body thead { background: rgba(246, 246, 246, 1); color: rgba(0, 0, 0, 1); text-align: left }
.markdown-body tr:nth-child(2n) { background-color: rgba(77, 208, 225, 0.05) }
.markdown-body td, .markdown-body th { padding: 12px 7px; line-height: 24px }
.markdown-body td { min-width: 120px }
.markdown-body blockquote { margin: 2em 0; padding: 24px 32px; border-left: 4px solid rgba(38, 198, 218, 1); background: rgba(77, 208, 225, 0.15); position: relative }
.markdown-body blockquote:before { content: "❝"; top: 8px; left: 8px; color: rgba(77, 208, 225, 1); font-size: 30px; line-height: 1; font-weight: 700; position: absolute; opacity: 0.7 }
.markdown-body blockquote:after { content: "❞"; font-size: 30px; position: absolute; right: 8px; bottom: 0; color: rgba(77, 208, 225, 1); opacity: 0.7 }
.markdown-body blockquote p { color: rgba(89, 89, 89, 1); line-height: 2 }
.markdown-body ol, .markdown-body ul { color: rgba(89, 89, 89, 1); padding-left: 28px }
.markdown-body ol li, .markdown-body ul li { margin-bottom: 0; list-style: inherit }
.markdown-body ol li .task-list-item, .markdown-body ul li .task-list-item { list-style: none }
.markdown-body ol li .task-list-item ol, .markdown-body ol li .task-list-item ul, .markdown-body ul li .task-list-item ol, .markdown-body ul li .task-list-item ul { margin-top: 0 }
.markdown-body ol ol, .markdown-body ol ul, .markdown-body ul ol, .markdown-body ul ul { margin-top: 3px }
.markdown-body ol li { padding-left: 6px }
@media (max-width: 720px) { .markdown-body h1 { font-size: 24px } .markdown-body h2 { font-size: 20px } .markdown-body h3 { font-size: 18px } }.markdown-body pre, .markdown-body pre>code.hljs { background: rgba(255, 255, 255, 1); color: rgba(0, 0, 0, 1) }
.hljs-comment, .hljs-quote, .hljs-variable { color: rgba(0, 128, 0, 1) }
.hljs-built_in, .hljs-keyword, .hljs-name, .hljs-selector-tag, .hljs-tag { color: rgba(0, 0, 255, 1) }
.hljs-addition, .hljs-attribute, .hljs-literal, .hljs-section, .hljs-string, .hljs-template-tag, .hljs-template-variable, .hljs-title, .hljs-type { color: rgba(163, 21, 21, 1) }
.hljs-deletion, .hljs-meta, .hljs-selector-attr, .hljs-selector-pseudo { color: rgba(43, 145, 175, 1) }
.hljs-doctag { color: rgba(128, 128, 128, 1) }
.hljs-attr { color: rgba(255, 0, 0, 1) }
.hljs-bullet, .hljs-link, .hljs-symbol { color: rgba(0, 176, 232, 1) }
.hljs-emphasis { font-style: italic }
.hljs-strong { font-weight: 700 }
.markdown-body { line-height: 1.75; font-weight: 400; font-size: 15px; overflow-x: hidden; color: rgba(43, 43, 43, 1); font-family: -apple-system, system-ui, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Hiragino Sans GB, Microsoft YaHei, Arial, sans-serif; background-image: linear-gradient(90deg, rgba(159, 219, 252, 0.15) 3%, rgba(0, 0, 0, 0) 0), linear-gradient(1turn, rgba(159, 219, 252, 0.15) 3%, rgba(0, 0, 0, 0) 0); background-size: 20px 20px; background-position: center }
.markdown-body h1, .markdown-body h2, .markdown-body h3, .markdown-body h4, .markdown-body h5, .markdown-body h6 { padding: 30px 0; margin-top: 35px; margin-bottom: 10px; color: rgba(77, 208, 225, 1) }
.markdown-body h1 { font-size: 30px; text-align: center; position: relative; width: max-content; margin: 0 auto }
.markdown-body h1:before { position: absolute; content: ""; z-index: -1; top: -20px; height: 100%; width: 100px; left: 0; right: 0; margin: 0 auto; background: 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@keyframes h1Animate { 0% { background-position: right bottom } 50% { background-position: right } 100% { background-position: right bottom } }
.markdown-body h2 { display: block; border-bottom: 4px solid rgba(77, 208, 225, 1); position: relative; font-size: 24px; padding: 12px 32px; margin: 30px 0 }
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.markdown-body h2:after, .markdown-body h2:before { content: ""; display: block; position: absolute; bottom: 0 }
.markdown-body h2:after { right: 0; width: 400px; height: 10px; border-top-right-radius: 24px; background: linear-gradient(90deg, rgba(255, 255, 255, 1), rgba(77, 208, 225, 1)); max-width: 50vw }
.markdown-body h3 { margin: 30px 0; font-size: 18px; position: relative; padding: 4px 32px; width: max-content }
.markdown-body h3:before { border-bottom: 2px solid rgba(77, 208, 225, 1); width: 100%; content: ""; display: block; height: 28px; position: absolute; left: 0; top: 0; bottom: -2px; margin: auto; background-size: 28px 28px; background-image: url("data:image/png;base64,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"); background-repeat: no-repeat; animation: 2s infinite alternate h3animationbefore }
@keyframes h3AnimationBefore { 0% { width: 28px } 25% { width: 100% } 50% { width: 100% } 100% { width: 100% } }
.markdown-body h3:after { content: ""; display: block; width: 28px; height: 28px; position: absolute; border: 2px solid rgba(77, 208, 225, 1); border-radius: 50%; right: -15px; top: 0; bottom: 0; margin: auto; background-size: 28px 28px; background-image: url("data:image/png;base64,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"); animation: 2s infinite alternate h3animationafter }
@keyframes h3AnimationAfter { 0% { } 10% { } 50% { transform: rotate(-1turn) } 100% { transform: rotate(-1turn) } }
.markdown-body h4 { font-size: 16px }
.markdown-body h5 { font-size: 15px }
.markdown-body h6 { margin-top: 5px }
.markdown-body p { line-height: inherit; margin: 22px 0; letter-spacing: 2px; font-size: 14px; word-spacing: 2px }
.markdown-body img { max-width: 80%; border-radius: 6px; display: block; margin: 20px auto !important; object-fit: contain; box-shadow: 0 0 16px rgba(110, 110, 110, 0.45) }
.markdown-body figcaption { display: block; font-size: 13px; color: rgba(43, 43, 43, 1) }
.markdown-body figcaption:before { content: ""; background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgBAMAAACBVGfHAAAAGFBMVEVHcExAuPtAuPpAuPtAuPpAuPtAvPxAuPokzOX5AAAAB3RSTlMAkDLqNegkoiUM7wAAAGBJREFUKM9jYBhcgMkBTUDVBE1BeDGqEtXychNUBeXlKEqACsrLQxB8lnCQQClCiWt5OYoSiAIkJVAF5eVBqAqAShTAAs7l5ShKWMwRAmAlSArASpAVgJUkCqIAscESHwCVVjMBK9JnbQAAAABJRU5ErkJggg=="); display: inline-block; width: 18px; height: 18px; background-size: 18px; background-repeat: no-repeat; background-position: center; margin-right: 5px; margin-bottom: -5px }
.markdown-body hr { border-top: 1px solid rgba(77, 208, 225, 1); border-right: none; border-bottom: none; border-left: none; margin-top: 32px; margin-bottom: 32px }
.markdown-body del { color: rgba(77, 208, 225, 1) }
.markdown-body code { border-radius: 2px; overflow-x: auto; background-color: rgba(77, 208, 225, 0.08); color: rgba(38, 198, 218, 1); padding: 0.195em 0.4em }
.markdown-body pre { font-family: Menlo, Monaco, Consolas, Courier New, monospace; overflow: auto; position: relative; line-height: 1.75; box-shadow: 0 0 8px rgba(110, 110, 110, 0.45); border-radius: 4px; margin: 16px }
.markdown-body pre:before { content: ""; display: block; height: 30px; width: 100%; margin-bottom: -7px; background: url("data:image/png;base64,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") 10px 10px / 40px no-repeat }
.markdown-body pre>code { font-size: 12px; padding: 15px 12px; margin: 0; word-break: normal; display: block; overflow-x: auto; color: rgba(51, 51, 51, 1); background: rgba(248, 248, 248, 1) }
.markdown-body a { color: rgba(77, 208, 225, 1); border-bottom: 1px solid rgba(77, 208, 225, 1); font-weight: 400; text-decoration: none; margin: 0 4px }
.markdown-body a:active, .markdown-body a:hover { background-color: rgba(77, 208, 225, 0.1) }
.markdown-body strong { color: rgba(38, 198, 218, 1) }
.markdown-body strong:before { content: "「" }
.markdown-body strong:after { content: "」" }
.markdown-body em { font-style: normal; color: rgba(77, 208, 225, 1); font-weight: 700 }
.markdown-body table { display: inline-block !important; font-size: 12px; width: auto; max-width: 100%; overflow: auto; border: 1px solid rgba(246, 246, 246, 1) }
.markdown-body thead { background: rgba(246, 246, 246, 1); color: rgba(0, 0, 0, 1); text-align: left }
.markdown-body tr:nth-child(2n) { background-color: rgba(77, 208, 225, 0.05) }
.markdown-body td, .markdown-body th { padding: 12px 7px; line-height: 24px }
.markdown-body td { min-width: 120px }
.markdown-body blockquote { margin: 2em 0; padding: 24px 32px; border-left: 4px solid rgba(38, 198, 218, 1); background: rgba(77, 208, 225, 0.15); position: relative }
.markdown-body blockquote:before { content: "❝"; top: 8px; left: 8px; color: rgba(77, 208, 225, 1); font-size: 30px; line-height: 1; font-weight: 700; position: absolute; opacity: 0.7 }
.markdown-body blockquote:after { content: "❞"; font-size: 30px; position: absolute; right: 8px; bottom: 0; color: rgba(77, 208, 225, 1); opacity: 0.7 }
.markdown-body blockquote p { color: rgba(89, 89, 89, 1); line-height: 2 }
.markdown-body ol, .markdown-body ul { color: rgba(89, 89, 89, 1); padding-left: 28px }
.markdown-body ol li, .markdown-body ul li { margin-bottom: 0; list-style: inherit }
.markdown-body ol li .task-list-item, .markdown-body ul li .task-list-item { list-style: none }
.markdown-body ol li .task-list-item ol, .markdown-body ol li .task-list-item ul, .markdown-body ul li .task-list-item ol, .markdown-body ul li .task-list-item ul { margin-top: 0 }
.markdown-body ol ol, .markdown-body ol ul, .markdown-body ul ol, .markdown-body ul ul { margin-top: 3px }
.markdown-body ol li { padding-left: 6px }
@media (max-width: 720px) { .markdown-body h1 { font-size: 24px } .markdown-body h2 { font-size: 20px } .markdown-body h3 { font-size: 18px } }.markdown-body pre, .markdown-body pre>code.hljs { background: rgba(255, 255, 255, 1); color: rgba(0, 0, 0, 1) }
.hljs-comment, .hljs-quote, .hljs-variable { color: rgba(0, 128, 0, 1) }
.hljs-built_in, .hljs-keyword, .hljs-name, .hljs-selector-tag, .hljs-tag { color: rgba(0, 0, 255, 1) }
.hljs-addition, .hljs-attribute, .hljs-literal, .hljs-section, .hljs-string, .hljs-template-tag, .hljs-template-variable, .hljs-title, .hljs-type { color: rgba(163, 21, 21, 1) }
.hljs-deletion, .hljs-meta, .hljs-selector-attr, .hljs-selector-pseudo { color: rgba(43, 145, 175, 1) }
.hljs-doctag { color: rgba(128, 128, 128, 1) }
.hljs-attr { color: rgba(255, 0, 0, 1) }
.hljs-bullet, .hljs-link, .hljs-symbol { color: rgba(0, 176, 232, 1) }
.hljs-emphasis { font-style: italic }
.hljs-strong { font-weight: 700 }
随着Web技术的不断进化，CSS作为网页样式定义的关键技术，也在不断引入新的特性，增强开发者的设计能力。在这篇文章中，我们来盘点一下那些CSS的新特性以及那些不为人知的冷门特性，并通过实际案例和代码演示它们的应用。
@supports规则
@supports规则允许你在CSS中进行特性检测，据此应用相应的样式。
应用场景
只有当浏览器支持CSS Grid时，才使用Grid布局。
@supports (display: grid) {
.container {
display: grid;
grid-template-columns: repeat(3, 1fr);
}
}
CSS Grid布局
CSS Grid（网格布局）是一种强大的布局系统，允许我们更加灵活地设计复杂的网页布局。
应用场景
创建一个杂志风格的布局，其中内容被分为多列和多行。
.container {
display: grid;
grid-template-columns: 1fr 2fr 1fr;
grid-template-rows: auto;
gap: 10px;
}
.header {
grid-column: 1 / 4;
grid-row: 1;
}
.main-content {
grid-column: 2 / 3;
grid-row: 2;
}
.sidebar {
grid-column: 3 / 4;
grid-row: 2;
}
.footer {
grid-column: 1 / 4;
grid-row: 3;
}
subgrid
说起来，subgrid 就像是网格的子弹，让你的布局设计有了新的层次。它允许网格项内部再次定义网格，颠覆你对于网页空间的想象
应用场景
创建一个多层次的卡片布局
.card {
display: grid;
grid-template-rows: auto;
grid-template-columns: subgrid;
}
.card-content {
display: grid;
grid-template-columns: 1fr 2fr;
gap: 15px;
}
@container
CSS容器查询，这可是响应式设计的新篇章。你的组件样式现在可以基于父容器的大小来调整，而不仅仅是视口尺寸。
应用场景
让卡片在容器尺寸变化时改变布局
@container (min-width: 500px) {
.card {
padding: 2rem;
}
}
:is()伪类
:is() 伪类就像是一把万能钥匙，它可以让你的选择器变得简洁而强大，避免了复杂的选择器嵌套。
应用场景
为多种不同的元素应用相同的样式，而不再需要书写冗长的选择器
:is(.header, .footer, .sidebar) {
background-color: peachpuff;
}
color-scheme属性
color-scheme属性让我们可以为网页轻松定义一个亮色和暗色模式。让用户的眼睛在夜晚也能享受舒适的浏览体验。
应用场景
让你的网页跟随系统主题自动切换色彩模式
:root {
color-scheme: light dark;
}
contain属性
contain属性可以对元素的布局、样式和绘制等进行限制，提升页面的性能。
应用场景
优化滚动列表的性能，避免列表外的渲染影响内部。
.scroll-list {
contain: strict;
overflow-y: auto;
height: 200px;
}
CSS变量
CSS变量（也称为自定义属性）允许你在文档中定义可重用的值。
应用场景
统一管理一个网站的主题颜色。
:root {
--main-color: #3498db;
--accent-color: #e74c3c;
}
body {
background-color: var(--main-color);
color: white;
}
.button {
background-color: var(--accent-color);
}
CSS滤镜
CSS滤镜提供了一种方法来对元素的渲染进行图形效果处理，如模糊或颜色偏移。
应用场景
为图片添加一个模糊效果。
.blur-image {
filter: blur(5px);
}
CSS Scroll Snap
CSS Scroll Snap允许开发者创建具有“吸附”效果的滚动容器，使得滚动时元素可以停在预定义的位置。
应用场景
创建一个全屏滚动的幻灯片效果。
.container {
scroll-snap-type: y mandatory;
overflow-y: scroll;
height: 100vh;
}
.slide {
scroll-snap-align: start;
height: 100vh;
}
aspect-ratio属性
这个新属性允许你在不依赖特定宽高数值的情况下，定义一个盒子的宽高比。
应用场景
创建一个视频播放器容器，它需要保持16:9的宽高比。
.video-container {
aspect-ratio: 16 / 9;
width: 100%;
background-color: black;
}
冷门特性
有时候，时尚界的小众潮流会意外火起来。同样，在CSS的世界里，那些冷门特性也可能突然成为你的秘密武器
CSS currentColor
currentColor关键字是一个冷门但非常有用的CSS特性，它允许你引用元素当前颜色（即color属性的值）。
应用场景
为边框和文本设置相同的颜色。
div {
color: #3498db;
border: 2px solid currentColor; /* 边框颜色将会是#3498db */
}
:focus-within伪类
:focus-within伪类是一个选择器，当元素内部的任何子元素具有焦点时，它可以选中该元素。
应用场景
当输入框获得焦点时，高亮整个表单区域。
.form-container:focus-within {
background-color: lightyellow;
}
input:focus {
outline: none;
border-color: #3498db;
}
CSS Shapes
CSS Shapes 允许你通过指定几何形状来定义元素周围内容的流动方式。
应用场景
文字围绕一个圆形图片流动。
.shape-outside {
width: 200px;
height: 200px;
shape-outside: circle(50%);
float: left;
margin-right: 20px;
}
clip-path
clip-path属性允许你剪切元素到基本形状或SVG路径。
应用场景
创建一个菱形的用户头像。
.diamond-avatar {
width: 100px;
height: 100px;
background-image: url('avatar.jpg');
clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
}
object-fit和object-position
这些属性工作起来就像background-size和background-position，但是对于<img>和<video>元素。
应用场景
完美地填充一个不同尺寸的图片容器，同时保持图片的比例。
.img-container img {
width: 100%;
height: 100%;
object-fit: cover; /* 保持图片的比例，同时填满容器 */
object-position: center; /* 图片居中显示 */
}
writing-mode
writing-mode让文字垂直或水平展示。
应用场景
构建一个垂直的导航菜单
.vertical-text {
writing-mode: vertical-rl;
text-orientation: upright;
}
mix-blend-mode
mix-blend-mode属性，让元素与背景玩起了颜色的混合游戏。
应用场景
让文字根据背景色智能变色
.blend-text {
mix-blend-mode: difference;
}
all属性
遇到那些需要从头开始的样式设计时，all属性一键复位所有属性。
应用场景
在一个组件中重置所有继承来的样式
.reset-all {
all: unset;
}
总结
CSS的世界像是个无尽的时尚秘境，新特性就像是每个季度新推出的时装系列，让网页设计不断焕发新韵味。而那些冷门特性，则像是时尚界独具匠心的复古风，潜藏着无限的可能。别小看这些小众的风格，它们能让你的设计从平淡无奇的大众脸脱颖而出，成为独树一帜的存在。
现在，让我们脱掉单调的外衣，拥抱CSS新特性的色彩世界。不管是在网页布局的广阔天地里追求创新，还是在细微的样式调整中发现美的惊喜，CSS总能给你想要的那份灵感和能量。记住，时尚的潮流总是在变，而你，就是那个引领潮流的人。
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