main {
    width: 100%;
}
.tab-container {
    width: 80%;
    height: 80vh;
    margin: 2em auto 10em;
    border-radius: 2em;
    border: none;
    overflow: scroll;
    overflow-x: scroll;
}

.tabs {
    display: flex;
    justify-content: center;
    overflow: hidden;
    background-color: #f1f1f1;
    z-index: 999;
}

.tab-button {
    background-color: inherit;
    float: left;
    border: none;
    outline: none;
    cursor: pointer;
    padding: 14px 16px;
    transition: 0.3s;
    font-size: 17px;
    border: 1px solid rgb(190, 190, 190);
    border-radius: 2em;
}

.tab-button:hover {
    background-color: #ddd;
}

.tab-button.active {
    background-color: #ccc;
}

.tab-content {
    padding: 6px 12px;
    border: 1px solid #ccc;
    border-top: none;
    display: block;
}
iframe {
    width: 100%;
    height: 80vh;
    border-radius: 2em;
    border: none;
}
code {
    font-size: 1.5em;
}
.nav-menu, .nav-menu ul{
    z-index:10031;
}
.nav-icon {
    z-index: 10032;
}
pre, code {
    white-space:pre;       /* CSS 3 */
    white-space: -moz-pre-wrap;  /* Mozilla, since 1999 */
    white-space: -pre-wrap;      /* Opera 4-6 */
    white-space: -o-pre-wrap;    /* Opera 7 */
    word-wrap: break-word;       /* Internet Explorer 5.5+ */
    overflow-x: auto;            /* Optionally add a horizontal scrollbar */
}