:root {
    --color-gray-100: #f3f4f6;
    --color-gray-300: #d1d5db;
    --color-gray-500: #6b7280;
    --color-gray-700: #374151;
    --color-gray-900: #111827;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
input,
button {
    font-family: sans-serif;
    font-size: 16px;
    line-height: 1.5rem;
    font-weight: 400;
    color: var(--color-gray-900);
}

input,
button,
.result {
    display: block;
    width: 100%;
    max-width: 320px;
    padding: 0.25rem 0.5rem;
    word-break: break-all;
}

a {
    color: var(--color-gray-900);
    word-break: break-all;
}

body {
    padding: 1rem;
}

button {
    border: none;
    background-color: var(--color-gray-300);
}

h1,
h2 {
    font-size: 1.5rem;
    line-height: 2rem;
    font-weight: 700;
}

hr {
    height: 1px;
    border: none;
    border-top: 1px solid var(--color-gray-300);
}

input {
    border: 1px solid var(--color-gray-500);

    &:focus-visible {
        outline: 1px solid var(--color-gray-500);
    }
}

img {
    max-width: 100%;
    max-height: 320px;
}

ul {
    display: flex;
    column-gap: 1rem;
    margin: 1rem 0;
    list-style: none;
}

#page {
    &>div {
        margin: 1rem 0;
    }
}

.result {
    border: 1px solid var(--color-gray-300);
}

.max-width-640 {
    max-width: 640px;
}

.text-gray-500 {
    color: var(--color-gray-500);
}