phantasmal-world/src/new/core/gui/ToolBar.css

.core_ToolBar {
    box-sizing: border-box;
    display: flex;
    flex-direction: row;
    padding-top: 1px;
    border-bottom: solid var(--border-color) 1px;
}

.core_ToolBar > * {
    margin: 2px;
}

.core_ToolBar .core_Button {
    background-color: transparent;
    border-color: transparent;
}

.core_ToolBar .core_Button:hover {
    background-color: #404040;
    border-color: #505050;
}

.core_ToolBar .core_Button:active {
    background-color: #383838;
    border-color: #404040;
    color: #d0d0d0;
}