/* Remove the floating tab design and replace it with a design similar to Chrome */
.tab-background {
    border-radius: 10px 10px 0 0 !important;
    margin-bottom: 0 !important;
    margin-top: 1 !important;
}

/* Move the List All Tabs button closer to the edge of the window */
#alltabs-button {
    position: absolute !important;
    right: 3px !important;
    top: 5px !important;
}

/* Adds space between the new tab button and the List All Tabs button */
#tabs-newtab-button {
    margin-right: 40px !important;
}

/* Reduce the gap between the three buttons and first tab */
.titlebar-spacer[type="pre-tabs"]{
    width: 15px !important;
}

/* Always show the close button ("x") on all tabs */
.tabbrowser-tab:not([pinned]) .tab-close-button {
    visibility: visible !important;
    opacity: 1 !important;
    display: -moz-box !important;
}