html {
    scroll-behavior: smooth;
}

#editor {
    flex: 2;    
}

#toc {
    border-left: 1px solid #ccc;
    font-family: sans-serif;
    background-color: #fff;
    border: 2px solid #6495ED;
    border-radius: 5px;
    padding: 10px;
    margin: 1em 1em 0 1em;
    width: auto;
    display: inline-block;
}

    #toc[style="display: none;"] {
        display: none !important;
    }

    #toc ul {
        list-style-type: none;
        padding-left: 20px;
    }

        #toc ul ul {
            padding-left: 20px;
        }

    #toc a {
        text-decoration: none;
        font-size: 15px;
        color: #0000ff;
    }

        #toc a:hover {
            text-decoration: underline;
        }

/*.arrow {
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 10px;
    vertical-align: middle;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid #000; 
    cursor: pointer;
    user-select: none;
}

.arrow.collapsed {
    border-top: none;
    border-bottom: 5px solid #000;
}*/