* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    width: 100%;
}

body {
    font-family: 'Noto Sans JP';
    margin: 0;
    width: 100%;
}

h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-block-start: 0.67em;
    margin-block-end: 0.67em;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
}

h3 {
    margin-block-start: 0.5em;
    margin-block-end: 0.5em;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
}

a {
    white-space: nowrap;
}

p {
    margin: 0;
}

div {
    padding: 0;
    margin: 0;
}

section {
    padding: 1rem 1rem;
}

article {
    padding: 1rem 1rem;
}


header {
    background: #004aad;
    color: white;
    padding: 20px;
    text-align: center;
}

nav a {
    margin: 0 15px;
    color: white;
    text-decoration: none;
    white-space: nowrap;
}