Distinguishing original posts and boosts with a colored left border

:root {
    --border: 3px;
    --width: 600px; /* original width is 600px */
}

/* original post */
.scrollable:first-child .item-list .status__wrapper {
    border-left: solid var(--border) #a8384a;
}
/* boost */
.scrollable:first-child .item-list .status__wrapper[aria-label$="boosted"] {
    border-left-color: #426f96;
}
/* increase whole column width by left border width */
.columns-area__panels__main {
    max-width: calc( var(--width) + var(--border) );
}