body {
    margin: 0;
}

.headerdiv {
    background-color: #353;
    display: flex;
}

.headerdiv .logowrapper {
    flex: initial;
    margin: 0;
    padding: 0;
    height: 42px;
}

.headerdiv > .logowrapper > .logo {
    height: 30px;
    margin: 4px 0px 8px 6px;
    flex: initial;
}

.tabrow {
    display: flex;
    flex: auto;
}

.tab {
    display: flex;
    justify-content: center;
    align-items: center;

    background-color: #888;
    color: #FFF;
    border: 1px solid black;
    font-weight: bold;

    margin: 5px 10px;
    padding: 0px 5px;
    min-width: 64px;
    vertical-align: center;
    text-align: center;

    flex: initial;
}

.tab_github {
    background-color: #4078c0;
    color: black;
}

.tab_split {
    flex: auto;
}

.tab:hover {
    cursor: pointer;
    color: blue;
    background-color: #999;
}

.tab_github:hover {
    background-color: #c9510c;
    color: black;
}

@media (max-width: 800px) {

    .logowrapper {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .headerdiv {
        flex-direction: column;
    }

    .tabrow {
        flex-direction: column;
    }

}