@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

:root {
    --base: #fff;
    --half: #888;
    --use: #000;
    --accentBase: #448;
    --accentHalf: #888;
    --accentUse: #fff;
    --link: #88f;
}

html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}
html {
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 300;
    font-size: 16px;
}
body {
    overflow-y: scroll;
    position: relative;
    color: var(--use);
    background-color: var(--base);
}

* {
    box-sizing: border-box;
}

a {
    text-decoration: none;
    color: inherit;
    background-color: inherit;
}
button {
    cursor: pointer;
    user-select: none;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0;
    padding: 0;
    text-decoration: none;
    text-align: center;
    font-family: inherit;
    font-weight: inherit;
    font-size: inherit;
    border: none;
    outline: none;
    appearance: none;
    color: inherit;
    background-color: transparent;
}