html,
body {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
    font-family:
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        Oxygen,
        Ubuntu,
        Cantarell,
        "Open Sans",
        "Helvetica Neue",
        sans-serif;
}

.sidebar {
    width: 200px;
    height: 100%;
    background-color: #f1f1f1;
    position: fixed;
    top: 0;
    left: 0;
}

.content {
    position: fixed;
    top: 0;
    left: 200px;
    width: calc(100% - 200px);
    height: 100%;
    border: none;
    margin: 10px;
}

iframe {
    position: fixed;
    top: 0;
    left: 200px;
    width: calc(100% - 200px);
    height: 100%;
    border: none;
}

.sidebar-item {
    display: block;
    padding: 10px;
    text-decoration: none;
    color: #333;
    font-weight: bold;
    background-color: #e2e2e2;
    margin: 9px;
    border-radius: 10px;
}

.sidebar-item:hover {
    background-color: #d0d0d0;
}

input,
textarea {
    width: 95%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-sizing: border-box;
}

.longtext {
    resize: vertical;
    min-height: 100px;
}