.toolbar {
    opacity: 0.4;
}
.top-toolbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 60px;
    background-color: dimgray;
    border-bottom: 2px solid #333;
    opacity: 0.4;
    padding: 10px;
    box-sizing: border-box;
}