:root {
    --cb-color-black: black;
    --cb-color-blue: #5accff;
    --cb-color-gray: #e9e9ed;
    --cb-color-pink: #f9f;
    --cb-color-yellow: yellow;
    --cb-color-screen: rgba(0, 0, 0, 0.1);
    --cb-padding: 1rem 2rem 1rem;
    --cb-padding-bottom: 1rem;
    --cb-padding-left-right: 2rem;
    --cb-padding-top: 1rem;
}
article {
    align-items: center;
    display: flex;
    flex-grow: 1;
    justify-content: center;
    width: 100%;
}
body {
    min-height: 100vh;
    width: 100%;
    display: flex;
    flex-direction: column;
}
footer {
    width: 100%;
}
h2 {
    font-size: 1.25rem;
}
header {
    width: 100%;
}
html {
    background: var(--cb-color-yellow);
    color: var(--cb-color-black);
    font-family: Roboto, Verdana, sans-serif;
    font-size: 16px;
    height: 100%;
    width: 100%;
}
p {
    margin-top: 1rem;
    line-height: 1.5rem;
}
section {
    margin: 2rem 0 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--cb-color-black) /*black*/;
}
.hidden {
    display: none;
}
#footer {
    font-size: 0.75rem;
    padding: var(--cb-padding);
    text-align: right;
}
#main {
    max-width: 400px;
    padding: var(--cb-padding);
}
#nav {
    padding: var(--cb-padding);
}
#nav li a {
    line-height: 2rem;
    text-decoration: underline dotted;
    color: var(--cb-color-black);
}
#nav li a:hover {
    text-decoration:
}