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cb58da455e
Follow-up to badd229bab. Moving
`position: sticky` to the same element as `contain: paint` defeated
the workaround. Move it to the parent elements again to make it work.
Bug: T373066
Change-Id: Ic942bfd599661a29cf7b2dbb6c6cc2ec521b8c82
63 lines
1.9 KiB
Plaintext
63 lines
1.9 KiB
Plaintext
/**
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* PinnableElement
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* Pinned containers are typically dropdown menus that have been
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* placed in a sidebar column, e.g. page tools menu, main menu.
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*/
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.vector-pinnable-element {
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font-size: @font-size-dropdown;
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}
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.vector-pinned-container {
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.mixin-vector-content-box();
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padding: 0 @padding-horizontal-dropdown-menu;
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margin-bottom: 2rem;
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display: none;
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// If there is no display grid support we remove pinnable elements
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@supports ( display: grid ) {
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display: block;
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}
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}
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.vector-column-start,
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.vector-column-end {
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// Support: Chrome
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// Work around sticky-positioned layers disabling subpixel text rendering (T327460, T373066).
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// This must be applied to the possible parent elements of .vector-sticky-pinned-container.
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contain: paint;
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}
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.vector-sticky-pinned-container {
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.mixin-vector-scrollable-with-fade();
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// Applies styles for making a pinned element sticky
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position: sticky;
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top: @grid-row-gap;
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// Border-box changes the height calculation.
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box-sizing: border-box;
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// Height is viewport height - row gap above and below the container.
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max-height: ~'calc( 100vh - (@{grid-row-gap} * 2) )';
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}
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@media ( max-width: @max-width-breakpoint-tablet ) {
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/**
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* At lower resolutions, we want to hide the pinned containers when JS is enabled since these
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* elements collapse (become unpinned) at this resolution via PinnableElement.js.
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* Although this is handled in JS, this rule prevents the pinned menu from
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* appearing on pageload, at low resolutions, before the JS kicks in.
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*/
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.client-js .vector-pinned-container {
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display: none;
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}
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/**
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* T357022 Sticky pinned containers have an ::after psuedo-element used to indicate the
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* container is scrollable. On lower resolutions sticky pinned containers will always
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* be empty. We need to set the container to display: none to prevent the psuedo-element
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* height from affecting the layout
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*/
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.client-js .vector-sticky-pinned-container {
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display: none;
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}
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}
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