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

h1,
h2,
p {
    margin: 0;
    padding: 0
}

h1 {
    margin-top: 2rem;
    margin-bottom: 2rem;
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.4
}

h2 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 700;
    line-height: 1.4
}

h4 {
    margin-top: .5rem;
    margin-bottom: .5rem
}

h5 {
    margin-top: .5rem;
    margin-bottom: 1rem
}

p {
    font-size: 1rem;
    line-height: 1.4
}

a {
    color: #000;
    text-decoration: none
}

a:hover {
    cursor: pointer;
    text-decoration: none
}

hr {
    border-top: 1px solid #000;
    border-bottom: none;
    margin: 0
}

pre {
    white-space: pre-wrap
}

body {
    flex-direction: column;
    min-height: 100vh;
    display: flex
}

body>main {
    margin: 0
}

section {
    padding: 1rem 0
}

@media (width>=768px) {
    section {
        padding: 2rem 0
    }
}

fieldset {
    flex-direction: column;
    margin-bottom: .5rem;
    padding: 1rem;
    display: flex
}

form {
    max-width: 100%
}

@media (width>=768px) {
    form {
        max-width: 400px
    }
}

input {
    border: 1px solid #000;
    border-radius: 4px;
    margin-top: .25rem;
    margin-bottom: .5rem;
    padding: .5rem;
    font-size: 1rem
}

legend {
    margin-bottom: .5rem;
    font-weight: 600
}

ul {
    margin: 0;
    padding: 0;
    list-style: none
}

li {
    margin-bottom: .5rem
}

dl {
    margin: .5rem 0
}

code {
    background: #ddd;
    border-radius: 4px;
    padding: .25rem;
    font-family: monospace
}