/* page */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background-color: #dceeff;
    color: #17365d;
    line-height: 1.6;
}

/* top */
header {
    background-color: #244f7d;
    color: white;
    text-align: center;
    padding: 30px 15px;
}

header h1 {
    margin: 0;
    font-size: 40px;
}

header p {
    margin: 8px 0 15px;
}

/* links */
nav a {
    display: inline-block;
    color: white;
    background-color: #17365d;
    text-decoration: none;
    padding: 8px 14px;
    margin: 5px;
    border-radius: 5px;
}

nav a:hover {
    background-color: #396a9f;
}

/* main */
main {
    width: 90%;
    max-width: 1100px;
    margin: 25px auto;
}

/* box */
section {
    background-color: #b8d5ee;
    border: 3px solid #244f7d;
    border-radius: 8px;
    padding: 25px;
    margin-bottom: 25px;
}

h2 {
    margin-top: 0;
    color: #17365d;
    border-bottom: 2px solid #244f7d;
    padding-bottom: 5px;
}

h3 {
    color: #17365d;
}

/* images */
.image-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

figure {
    margin: 0;
}

.image-grid figure {
    background-color: #dceeff;
    border: 2px solid #244f7d;
    padding: 12px;
    text-align: center;
}

.image-grid img {
    width: 100%;
    height: 230px;
    object-fit: cover;
}

figcaption {
    margin-top: 8px;
    font-style: italic;
}

/* credit */
.credit {
    background-color: #edf7ff;
    border-left: 4px solid #244f7d;
    padding: 10px;
    font-size: 14px;
    text-align: left;
}

.credit a {
    color: #17365d;
    font-weight: bold;
}

/* wrap */
.wrapped-content {
    overflow: auto;
}

.wrapped-image {
    float: left;
    width: 300px;
    height: 300px;
    object-fit: cover;
    margin: 0 20px 10px 0;
    border: 3px solid #244f7d;
}

/* thumb */
.thumbnail-box {
    text-align: center;
}

.thumbnail {
    width: 500px;
    height: 500px;
    max-width: 100%;
    object-fit: cover;
    border: 5px solid #244f7d;
}

.thumbnail:hover {
    opacity: 0.85;
}

/* media */
.media-box {
    background-color: #dceeff;
    border: 2px solid #244f7d;
    padding: 18px;
    margin-top: 20px;
}

audio {
    width: 100%;
    max-width: 600px;
}

video {
    display: block;
    width: 100%;
    max-width: 700px;
}

/* end */
footer {
    background-color: #17365d;
    color: white;
    text-align: center;
    padding: 12px;
}

/* phone */
@media screen and (max-width: 800px) {
    .image-grid {
        grid-template-columns: 1fr;
    }

    nav a {
        display: block;
    }

    .wrapped-image {
        float: none;
        display: block;
        width: 100%;
        height: auto;
        margin-bottom: 15px;
    }

    .thumbnail {
        height: auto;
    }
}