.header {

    display: flex;
    flex-direction: row;
    justify-content: space-between;

    background-color: rgba(0, 0, 0, 0);
    align-items: center;

    position: absolute;

    top: 0;
    left: 0;
    right: 0;

    z-index: 999;
}

.left-section {
    padding-left: 20px;
}

.logo {
    height: 70px;
}

.right-section {
    padding-right: 20px;
}

.user-button {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;

    height: 50px;

    padding: 0;
    border: none;
    background-color: rgba(0, 0, 0, 100);
}

.user-button .tooltip {
    position: absolute;
    background-color: dimgray;
    bottom: -30px;
    padding: 4px 8px 4px 8px;
    border-radius: 2px;

    font-size: 12px;
    opacity: 0;

    transition: opacity 0.15s;
    white-space: nowrap;
    color: white;
}

.user-button:hover .tooltip {
    opacity: 1;
}

.user {
    height: 50px;
}