body, html {
    background-color: #5f6875;
    color: #eff5f8;
    font-family: 'Courier New', Courier, monospace;
    margin: 0;
}

main {
    display: flex;
}

section {
    flex-grow: 1;
    margin: 1em;
    display: flex;
    flex-direction: column;
}

section .entry {
    flex-grow: 1;
}

aside {
    flex: .5 0;
    min-width: 8rem;
    border-right: 1px solid #ffffff3d;
    padding: 1em;
}

.io {
    background-color: #c3c3c3;
    border: 0.3em solid transparent;
    box-sizing: border-box;
    color: black;
    display: block;
    font-family: inherit;
    font-size: inherit;
    padding: 1em;
    width: 100%;
}

aside .io {
    padding: 0.5em;
}

.entry:hover {
    background-color: #d6d6d6;
}

.entry:focus {
    background-color: white;
    outline: none;
}

textarea {
    resize: vertical;
    height: 15vh;
}

textarea.error {
    border-color: #ffbdbd;
}

.error {
    background-color: #ffbdbd;
    color: red;
}

h1, h2, h3 {
    font-family: Tahoma, Geneva, sans-serif;
    font-weight: lighter;
}

h1 {
    font-size: 2em;
    margin: 0.3em;
}

h2 {
    font-size: 1.5em;
}

h3 {
    font-size: 1.2em;
}

a {
    color: inherit;
}

footer {
    text-align: center;
}

footer ul {
    padding: 0;
    margin: .8em;
}

footer li {
    display: inline;
}

footer li + li::before {
    content: '| ';
}

@media only screen and (max-width: 600px) {
  .hide-on-small-screens {
    display: none;
  }
}
