# வார்ப்புரு:Sticky header/styles.css

/* */
/**
- Make first row or thead element top sticky.
-
- Table classes:
- - sticky-header: sticky first row.
- - sticky-header-multi: sticky thead; headers moved via sortable + JavaScript.
-
- Tested:
- - Windows 10: (all skins) Chrome, Firefox, Edge.
- - Android Galaxy S21 (Minerva): Chrome, Firefox.
- - iPhone SE 2020 (Minerva): Chrome, Edge, Firefox, Opera, Safari.
- - Wikipedia Android app.
- - Print: Not styled.
- - No JavaScript.
-
- Notes:
- - Sortable moves to thead any header rows and (after sort) sorttop rows.
- - Sticky gadget (.mw-sticky-header) moves to thead any wikitable header rows.
-
- Issues:
- - Minerva not sticky.
- - Monobook width <= not sticky.
- Can't override:
- body.skin--responsive .monobook-body {overflow: auto;}
- /
@media screen {
/**
- Make top sticky.
- /
.sticky-header > thead > tr:first-child,
.sticky-header > caption + tbody > tr:first-child,
.sticky-header > tbody:first-child > tr:first-child,
.sticky-header-multi > thead {
position: sticky; /* Was "static". */
top: 0;
z-index: 10;
}  
/**
- Fix scrolling data shows through sticky's transparent background.
- /
/* Plain table headers. */
.sticky-header:not(.wikitable),
.sticky-header-multi:not(.wikitable) {
background-color: white;
}
/* Plain table headers. */
.sticky-header:not(.wikitable) > *, /* For thead, tbody. */
.sticky-header:not(.wikitable) > thead > tr:first-child,
.sticky-header:not(.wikitable) > caption + tbody > tr:first-child,
.sticky-header:not(.wikitable) > tbody:first-child > tr:first-child,
.sticky-header-multi:not(.wikitable) > thead,
/* Wikitable and plain table .sorttop rows after sort. */
.sticky-header-multi > thead {
background-color: inherit;
}  
/**
- Fix missing borders due to sticky position and wikitable collapsed borders.
- https://bugs.webkit.org/show_bug.cgi?id=128486
-
- Skip rare plain table separated borders, which sometimes shows scrolling
- data through sticky's "-spacing".
-
- Skip very rare Timeless plain table ".mw-datatable" collapsed boarders.
- /
.sticky-header.wikitable,
.sticky-header-multi.wikitable {
-collapse: separate; /* Was "collapse". */
-spacing: 0;
-width: 0 0;
}
.sticky-header.wikitable td,
.sticky-header.wikitable th,
.sticky-header-multi.wikitable td,
.sticky-header-multi.wikitable th {
-width: 0 0 ;
}
body.skin-timeless .sticky-header.wikitable,
body.skin-timeless .sticky-header-multi.wikitable {
-bottom-width: 0.2em;
padding: 0;
}
/* Adjust borders. */
.sticky-header.static-row-numbers.wikitable tr::before,
.sticky-header-multi.static-row-numbers.wikitable tr::before {
--width: ;
}
.sticky-header.static-row-numbers.wikitable > thead > tr:first-child::before,
.sticky-header.static-row-numbers.wikitable > caption + tbody > tr:first-child::before,
.sticky-header.static-row-numbers.wikitable > tbody:first-child > tr:first-child::before,
.sticky-header-multi.static-row-numbers.wikitable > thead > tr:first-child::before,
.sticky-header-multi.static-row-numbers.wikitable > caption + tbody > tr:first-child::before,
.sticky-header-multi.static-row-numbers.wikitable > tbody:first-child > tr:first-child::before,
/* Sortbotton #1: all. When supported, consolidate #1-2 to tr:nth-child(1 of .sortbottom)::before */
.sticky-header.static-row-numbers.wikitable .sortbottom::before,
.sticky-header-multi.static-row-numbers.wikitable .sortbottom::before {
-top-width: ;
}
/* Sortbottom #2: all minus 1st. */
.sticky-header.static-row-numbers.wikitable .sortbottom ~ .sortbottom::before,
.sticky-header-multi.static-row-numbers.wikitable .sortbottom ~ .sortbottom::before {
-top-width: 0;
}
.sticky-header.static-row-numbers.wikitable > tbody > tr:not(.static-row-header)::before,
.sticky-header-multi.static-row-numbers.wikitable > tbody > tr:not(.static-row-header)::before {
-bottom-width: 0 !important;
--width: 0 !important;
}  
/**
- Fix Timeless. Wasn't sticky when on very wide tables.
-
- :has not supported, can't restrict to sticky tables.
- /
body.skin-timeless .content-table-scrollbar,
body.skin-timeless .overflowed,
body.skin-timeless .overflowed .content-table {
overflow: visible; /* Reset. */
}
body.skin-timeless .scroll-.overflowed .content-table- {
box-shadow: ; /* Reset. */
-: ; /* Reset. */
}
}  
/**
- Adjust to other sticky elements.
- /
@media screen and (min-width: ) {
/* Vector (2022) width >=: Below sticky header bar. */
body.vector-sticky-header-visible .sticky-header > thead > tr:first-child,
body.vector-sticky-header-visible .sticky-header > caption + tbody > tr:first-child,
body.vector-sticky-header-visible .sticky-header > tbody:first-child > tr:first-child,
body.vector-sticky-header-visible .sticky-header-multi > thead {
top: 3.125rem;
}
}
@media screen and (min-width: ) {
/* Timeless width >=: Below sticky header bar. */
body.skin-timeless .sticky-header > thead > tr:first-child,
body.skin-timeless .sticky-header > caption + tbody > tr:first-child,
body.skin-timeless .sticky-header > tbody:first-child > tr:first-child,
body.skin-timeless .sticky-header-multi > thead {
top: 3.51em;
}
}  
/**
- Fix skins width <= (mobile) not sticky. Override to make sticky.
-
- Android issue: wide table horizontal scroll lost, wider page,
- zoom out for sticky headers, unreadable when sticky.
-
- iPhone issue: .
-
- Changes to Minerva prevent sticky.
- /
@media screen and (max-width: ) {
body.skin-monobook .sticky-header,
body.skin-monobook .sticky-header-multi,
body.skin-vector-legacy .sticky-header,
body.skin-vector-legacy .sticky-header-multi,
body.skin-vector-2022 .sticky-header,
body.skin-vector-2022 .sticky-header-multi {
display: table; /* Was "block". */
}
}  
/*
- Fix dark mode.
- /
@media screen {
html.skin-theme-clientpref-night body.skin-minerva .sticky-header-multi.wikitable {
background-color: #101418;
}
}
@media screen and (prefers-color-scheme: dark) {
html.skin-theme-clientpref-os body.skin-minerva .sticky-header-multi.wikitable {
background-color: #101418;
}
}