body {
    background-color: #111111;
    color: whitesmoke;
    font-family: Hack,'Times New Roman', Times, serif;
    font-variant: normal;
}
.parent {
    background-color: #111111;  
    justify-content: center;
    text-align: center; 
    display: flex;
    flex-direction: column;
    border: 1px solid orangered;
}
.sidebar {
    width: 25%;
    height: 720px;
    float:left;
    margin-right: 10px; 
    align-items: center;
    justify-content: flex-start;
    padding: 40px;
}

.mainbar {
    width:100%;
    padding: 40px;
    margin: 10px auto;
    margin-top: 0;
    margin-bottom: 0;
    float: none;
    text-align: justify;
    justify-content: flex-start;
    display: block;
}

.empty-sidebar {
    border: 0px;
}
.sidebar > * {
    margin-bottom: 20px;
}

.button-grid {
    display: grid;
    grid-template-columns: auto auto
}

.button-grid > * {
    margin: 3px
}

@media screen and (max-width: 1080px) {
    .button-grid {
        display: flex;
        flex-direction: column;
    }
}