.botnavcolumn {
    float: left;
    width: 50%;
}
/* Style the tab */
.tab {
    float: left;
    /*background-color: #f7f7f7;*/
    width: 20%;
    height: auto;
    color: black;
}

/* Style the buttons inside the tab */
.tab button {
    display: block;
    background-color: inherit;
    color: black;
    padding: 5px 15px 16px;
    width: 100%;
    /*border: 1px solid;*/
    outline: none;
    text-align: left;
    cursor: pointer;
    transition: 0.3s;
    font-size: 17px;
    border: none;
}

        /* Change background color of buttons on hover */
        .tab button:hover {
            text-decoration: underline;
            color: black;
        }

        /* Create an active/current "tab button" class */
        .tab button.active {
            background-color: white;
            color: darkcyan;
            border-top: none;
            border-left: none;
            border-right: none;
            text-decoration: underline;
            font-weight: bold;
            /*border: 1px solid ;*/
        }
/* Style the tab content */
.tabcontent {
    float: left;
    padding: 0px 12px;
    /*border: 1px solid #ccc;*/
    width: 80%;
    /*border-left: none;*/
    min-height: 500px;
    /*background-color: white;*/
}

.responsive-tabs {
    padding: 1rem;
}

    .responsive-tabs .nav-tabs {
        display: none;
    }

@media (min-width: 768px) {
    .responsive-tabs .nav-tabs {
        display: flex;
    }

    .responsive-tabs .card {
        border: none;
    }

        .responsive-tabs .card .card-header {
            display: none;
        }

        .responsive-tabs .card .collapse {
            display: block;
        }
}

@media (max-width: 767px) {
    .responsive-tabs .tab-pane {
        display: block !important;
        opacity: 1;
    }
}

.hr {
    color: darkcyan;
}

header {
    height: var(--header);
    color: white;
}

main {
    display: flex;
    flex-wrap: wrap;
    min-height: calc(100vh - var(--header) - var(--footer));
}

    main div {
        flex: 1 1 100%;
    }