*, *::before, *::after { box-sizing: border-box; margin: 0; } :root { --font-size-base: 1.125rem; --font-size-h1: clamp(1.75rem, 1.5rem + 1vw, 2.5rem); --font-size-h2: clamp(1.5rem, 1.35rem + 0.9vw, 2rem); --font-size-h3: clamp(1.25rem, 1.15rem + 0.7vw, 1.75rem); --font-size-h4: clamp(1.125rem, 1.05rem + 0.5vw, 1.5rem); --font-size-h5: clamp(1rem, 0.95rem + 0.3vw, 1.25rem); --font-size-h6: clamp(0.875rem, 0.9rem + 0.15vw, 1.125rem); --font-size-header: clamp(1.125rem, 1.05rem + 0.5vw, 1.5rem); --font-size-header-lg: clamp(1.5rem, 3vw, 2rem); --line-height-base: 1.6; --line-height-heading: 1.2; --space-xs: 0.25rem; --space-sm: 0.5rem; --space-md: 1rem; --space-lg: 1.5rem; --space-xl: 2rem; --space-xxl: 3rem; --color-black: #131313; --color-white: #F5F5F5; --color-blue: #005b96; --color-blackboard-darker: #262626; --color-blackboard-dark: #404040; --color-blackboard-medium: #595959; --color-blackboard-light: #737373; --color-blackboard-lighter: #BFBFBF; --color-red: #ff8b8b; --color-yellow: #ffe48d; --color-green: #98f797; --traffic-light-size: 2rem; } html { font-size: 100%; } body { margin: 0 auto; max-width: 64rem; font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: var(--font-size-base); line-height: var(--line-height-base); background-color: var(--color-white); color: var(--color-black); } h1, h2, h3, h4, h5, h6 { margin-top: var(--space-lg); margin-bottom: var(--space-md); font-weight: 600; line-height: var(--line-height-heading); } h1 { font-size: var(--font-size-h1); } h2 { font-size: var(--font-size-h2); } h3 { font-size: var(--font-size-h3); } h4 { font-size: var(--font-size-h4); } h5 { font-size: var(--font-size-h5); } h6 { font-size: var(--font-size-h6); } p { margin-top: 0; margin-bottom: var(--space-md); max-width: 70ch; } small { font-size: 0.875rem; } strong { font-weight: 600; } em { font-style: italic; } ul, ol { margin-top: 0; margin-bottom: var(--space-md); padding-left: var(--space-lg); } li { margin-bottom: var(--space-xs); } a { color: var(--color-blue); text-decoration: underline; text-underline-offset: 0.25em; text-decoration-thickness: 1px; &:hover { text-decoration-thickness: 2px; } } main img { display: block; margin: var(--space-xl) auto; max-width: 100%; @media (min-width: 48rem) { max-width: 75%; } } video.cover { display: block; max-width: 100%; margin: var(--space-xl) auto; @media (min-width: 48rem) { max-width: 75%; } } body > header { display: grid; grid-template-areas: "title toggle" "menu menu"; grid-template-columns: 1fr auto; position: relative; align-items: center; margin-bottom: 1rem; padding: var(--space-lg) var(--space-lg) var(--space-lg) var(--space-lg); background-color: var(--color-blackboard-darker); color: var(--color-white); h1 { grid-area: title; margin: 0; font-size: var(--font-size-header); } details summary { grid-area: toggle; display: flex; align-items: center; justify-content: center; } nav { grid-area: menu; display: flex; gap: 1rem; justify-content: center; } @media (min-width: 48rem) { padding: var(--space-xxl) var(--space-lg) var(--space-xs) var(--space-lg); background: repeating-linear-gradient( 45deg, var(--color-blackboard-darker), var(--color-blackboard-darker) 8rem, var(--color-blackboard-dark) 8rem, var(--color-blackboard-dark) 16rem ); background-attachment: fixed; &::after { content: ""; position: absolute; top: 50%; right: 2rem; transform: translateY(-50%); width: var(--traffic-light-size); height: calc(var(--traffic-light-size) * 3 + 3 * 0.1rem); background: radial-gradient(circle, var(--color-red) 50%, black 51%) top/var(--traffic-light-size) var(--traffic-light-size) no-repeat, radial-gradient(circle, var(--color-yellow) 50%, black 51%) center/var(--traffic-light-size) var(--traffic-light-size) no-repeat, radial-gradient(circle, var(--color-green) 50%, black 51%) bottom/var(--traffic-light-size) var(--traffic-light-size) no-repeat; } h1 { font-size: var(--font-size-header-lg); } } } body > main { margin: 1rem; } body > footer { margin: var(--space-xl) 0; padding: var(--space-xl) 0; } nav { menu { display: flex; flex-direction: column; gap: 0.5rem; margin: 0; padding: 0; list-style: none; } li { margin: 0; padding: 0; } a { display: block; padding: 1rem; border: 0.1rem solid var(--color-white); color: var(--color-white); text-decoration: underline; text-underline-offset: 0.25em; text-decoration-thickness: 1px; &.active { background: var(--color-blackboard-medium); font-weight: 600; text-decoration: none; &:hover { background: var(--color-blackboard-medium); } } &:hover, &:active, &:focus { background: var(--color-blackboard-dark); text-decoration-thickness: 2px; } } @media (min-width: 48rem) { menu { flex-direction: row; margin: 1em 0; } a { display: inline; border: none; } } } details { summary.button { display: inline-block; padding: 0.5em 1em; border: 1px solid var(--color-white); border-radius: 0.2em; list-style: none; cursor: pointer; &:hover, &:active { background-color: var(--color-white); color: var(--color-black); } &::-webkit-details-marker { display: none; } } } nav.with-toggle { display: none; margin-top: var(--space-md); flex-direction: column; } details.nav-toggle[open] ~ nav { display: flex; } @media (min-width: 48rem) { nav.with-toggle { display: flex; padding: 0.5rem 0; } details.nav-toggle { display: none; } } .post-it { position:relative; max-width:18em; min-height:14em; margin:60px auto; padding:5em 1.5em 2em 1.5em; line-height:1.5; font-family:"Coming Soon",cursive; font-size:1.2em; text-align:center; text-shadow:0 1px 0 #fff; color:rgba(0,0,0,0.8); background-color:#fcf0ad; background-image:-moz-linear-gradient(top,rgba(0,0,0,0.02),rgba(0,0,0,0.02)); *background:#fcf0ad; background-size:1px 3.5em; background-repeat:repeat-x; border-radius:4px } .post-it:before, .post-it:after { z-index:-1; position:absolute; content:""; top:80%; bottom:15px; width:50%; max-width:300px; background:rgba(0,0,0,0.7); box-shadow:0 15px 10px rgba(0,0,0,0.7) } .post-it:before { left:10px; transform:rotate(-3deg) } .post-it:after { right:10px; left:auto; transform:rotate(3deg) }