main.css

#theia-bottom-content-panel .p-TabBar[data-orientation='horizontal'].theia-app-bottom {
    background: var(--theia-editorGroupHeader-tabsBackground);
}

#theia-bottom-content-panel .p-TabBar-tab {
    background: var(--theia-arduino-bottomPanelTabBackground);
}

.theia-output {
    background: var(--theia-terminal-background);
    color: var(--theia-terminal-foreground);
}

#outputView {
    cursor: text;
}

.p-TabBar-toolbar .item.arduino-tool-item {
    margin-left: 3px;
}

.p-TabBar-toolbar .item.arduino-tool-item > div {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 24px;
    width: 24px;
    background: var(--theia-button-background);
}

.p-TabBar-toolbar .item.arduino-tool-item > div:hover {
    background: var(--theia-button-hoverBackground);
}

.arduino-verify, .arduino-upload {
    border-radius: 12px;
}

.arduino-tool-icon {
    height: 24px;
    width: 24px;
    color: var(--theia-arduino-toolbarItemForeground);
    background: var(--theia-arduino-toolbarItemForeground);
    -webkit-mask: url(../icons/mask-buttons.svg);
    mask: url(../icons/mask-buttons.svg);
    -webkit-mask-size: 800%;
    mask-size: 800%;
}

.arduino-save-file-icon {
    -webkit-mask-position: 59px -4px;
    mask-position: 59px -4px;
}

.arduino-verify-icon {
    -webkit-mask-position: 188px -4px;
    mask-position: 188px -4px;
}

.arduino-upload-icon {
    -webkit-mask-position: 156px -4px;
    mask-position: 156px -4px;
}

.arduino-show-open-context-menu-icon {
    -webkit-mask-position: 92px -4px;
    mask-position: 92px -4px;
}

.toggle-serial-monitor-icon {
    -webkit-mask-position: 28px -4px;
    mask-position: 28px -4px;
}

#arduino-toolbar-container {
    display: flex;
    width: 100%;
}

.p-TabBar-toolbar.theia-arduino-toolbar {
    flex: 1;
    z-index: 0;
}

#theia-top-panel .p-TabBar-toolbar.theia-arduino-toolbar.right {
    justify-content: flex-start;
    min-width: 190px;
}

#theia-top-panel .p-TabBar-toolbar.theia-arduino-toolbar.left {
    min-width: 398px;
    justify-content: flex-end;
}

.arduino-toolbar-tooltip {
    margin-left: 10px;
    display: flex;
    align-items: center;
    color: var(--theia-arduino-toolbarTooltip);
}

.p-TabBar-toolbar .item > div.arduino-toggle-advanced-mode {
    display: flex;
    width: 24px;
    height: 24px;
    justify-content: center;
    align-items: center;
}

.arduino-toggle-advanced-mode-icon {
    mask: none;
    -webkit-mask: none;
    background: none;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--theia-arduino-toolbarItemForeground);
}

.monaco-editor .margin {
    border-right: 2px solid var(--theia-arduino-editorMargin);
    box-sizing: border-box;
}

.noWrapInfo {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.theia-sidepanel-toolbar .theia-sidepanel-title {
    margin-left: 10px;
}