StartTree/skeletons/style.css

@font-face {
    font-family: "Roboto Mono";
    src: url("./Hack.ttf");
}

:root {
    --font: "Roboto Mono";
    /* --background: var(--background) !important; */
    /* --foreground: #fffffe; */
    /* --pink: #e53170; */
    /* --red: #f25f4c; */
    /* --orange: #ff8906; */
    /* --branch: 1px solid #a7a9be; */
    --branch: 1px solid var(--color12);
}

html {
/* font-size */
}

body {
    background: var(--background);
}

.container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.prompt {
    font-family: var(--font);
    color: var(--color5);
}

.prompt~.prompt {
    padding: 1.5rem 0 0.3125rem;
}

span {
    color: var(--color10);
}

h1 {
    display: inline;
    font-family: var(--font);
    font-size: 1rem;
    font-weight: normal;
    color: var(--color9);
}

.tree > ul {
    margin: 0;
    padding-left: 1rem;
    padding-right: 1rem;
}

ul {
    list-style: none;
    padding-left: 2.5rem;
}

li {
    position: relative;
}

li::before, li::after {
    content: "";
    position: absolute;
    left: -0.75rem;
}

li::before {
    border-top: var(--branch);
    top: 0.75rem;
    width: 0.5rem;
}

li::after {
    border-left: var(--branch);
    height: 100%;
    top: 0.25rem;
}

li:last-child::after {
    height: 0.5rem;
}

a {
    font-family: var(--font);
    font-size: 1rem;
    color: var(--color6);
    text-decoration: none;
    outline: none;
}

a:hover {
    color: var(--color12);
    background: var(--background);
}

form h1 {
    padding-left: 0.125rem;
}

input {
    font-family: var(--font);
    font-size: 1rem;
    color: var(--color6);
    background-color: var(--background);
    border-width: 1px;
    border-color: var(--color12);
    border-style: solid;
    padding-top: 4px;
    padding-bottom: 4px;
}

.column {
  flex: 50%;
  padding: 5px;
}

.row {
  display: flex;
}

.row:after {
  content: "";
  display: table;
  clear: both;
}