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<style>
:host {
--tabstrip-tab-height: calc(var(--tabstrip-tab-title-height) +
var(--tabstrip-tab-thumbnail-height));
--tabstrip-tab-width: var(--tabstrip-tab-thumbnail-width);
--tabstrip-tab-spacing: 16px;
--tabstrip-tab-dragging-shadow:
0 2px 3px 0 rgba(var(--google-grey-800-rgb), .3),
0 6px 10px 4px rgba(var(--google-grey-800-rgb), .15);
<if expr="not is_chromeos">
--tabstrip-tab-drag-image-scale: 1.1;
</if>
<if expr="is_chromeos">
/* ChromeOS scales drag images by 1.2, so this variable multiplied by
* 1.2 should be around 1.1. */
--tabstrip-tab-drag-image-scale: calc(1.1 / 1.2);
</if>
background: var(--color-web-ui-tab-strip-background);
box-sizing: border-box;
display: flex;
height: 100%;
overflow: overlay hidden;
touch-action: pan-x;
width: 100%;
}
#tabs {
display: flex;
min-width: fit-content;
overflow: hidden;
width: 100%;
}
#pinnedTabs {
/* 3 pinned tabs should fit in the same space vertically as 1 unpinned
* tab. 20px is subtracted from the height of an unpinned tab as there
* are two 10px gaps to separate each of the 3 pinned tabs. */
--tabstrip-pinned-tab-size: calc((var(--tabstrip-tab-height) - 20px) / 3);
--tabstrip-tab-spacing: 10px;
display: grid;
grid-auto-columns: var(--tabstrip-pinned-tab-size);
grid-auto-flow: column;
grid-gap: var(--tabstrip-tab-spacing);
grid-template-rows: repeat(3, var(--tabstrip-pinned-tab-size));
padding-block-end: var(--tabstrip-tab-list-vertical-padding);
padding-block-start: var(--tabstrip-tab-list-vertical-padding);
padding-inline-end: 0;
padding-inline-start: var(--tabstrip-tab-spacing);
}
#pinnedTabs:empty {
display: none;
}
#unpinnedTabs {
display: flex;
min-width: fit-content;
padding-block-end: var(--tabstrip-tab-list-vertical-padding);
padding-block-start: var(--tabstrip-tab-list-vertical-padding);
padding-inline-end: 0;
padding-inline-start: var(--tabstrip-tab-spacing);
}
tabstrip-tab-group {
--tabstrip-tab-spacing: 8px;
}
tabstrip-tab-group:not([dragging]) {
margin-block-end: calc(-1 * var(--tabstrip-tab-spacing));
margin-block-start: calc(-1 * var(--tabstrip-tab-spacing));
margin-inline-end: var(--tabstrip-tab-spacing);
margin-inline-start: 0;
}
tabstrip-tab-group tabstrip-tab:last-child {
--tabstrip-tab-spacing: 0px;
}
tabstrip-tab + tabstrip-tab-group:not([dragging]) {
margin-inline-start: calc(-1 * var(--tabstrip-tab-spacing));
}
tabstrip-tab-group[dragging] {
margin-block-end: 0;
margin-block-start: 0;
margin-inline-end: 16px;
margin-inline-start: 0;
}
#dropPlaceholder {
background: var(--color-web-ui-tab-strip-tab-background);
border-radius: var(--tabstrip-tab-border-radius);
height: var(--tabstrip-tab-height);
margin-inline-end: var(--tabstrip-tab-spacing);
opacity: 0.5;
width: var(--tabstrip-tab-width);
}
</style>
<div id="tabStrip">
<div id="pinnedTabs"></div>
<div id="unpinnedTabs"></div>
</div>
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