media-larlet-fr/Herisson/style/main.css

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;

}

html {
    color: #313131;
    font-family: "Open Sans";
    font-size: 22px;
    line-height: 1.5rem;
}

@media(max-width: 70rem) {
    html {
        font-size: 18px;
    }
}

body {
    background-color: #f5f5f5;
}

a {
    color: #404c9e;

    transition: color .2s ease-in-out;
}
a:hover {
    color: #7586f0;
    text-decoration: none;
}

h1, h2, h3 {
    margin-top: 0;
    margin-bottom: 0.5rem;

    word-wrap: break-word;
}

h1 {
    margin-bottom: 1.75rem;
}

h1 { font-size: 2rem; line-height: 2.5rem; }
h2 { font-size: 1.5rem; line-height: 2rem; }
h3 { font-size: 1rem; line-height: 1.5rem; }

* + h1,
* + h2,
* + h3 {
    margin-top: 1.5rem;
}

p {
    margin-top: 0;
    margin-bottom: 1rem;
}
p:last-child {
    margin-bottom: 0;
}

ul, ol, dl {
    margin-top: 0;
    margin-bottom: 1rem;
}
ul:last-child,
ol:last-child,
dl:last-child {
    margin-bottom: 0;
}
p + ul,
p + ol,
p + dl {
    margin-top: -.5rem;
}

small {
    font-size: .8em;
    line-height: 1em;
}

strong {
    font-weight: bold;
}

img {
    max-width: 100%;
    height: auto;
}

.app-page-header {
    padding-top: .5rem;
    padding-bottom: .5rem;
    margin-bottom: 2rem;

    box-shadow: 0 0 1px #313131;
}
.app-page-header .container {
    display: flex;
    align-items: center;
}
.app-page-header .container > * {
    flex-grow: 0;
}
.app-page-header .container > .separator {
    flex-grow: 1;
}
@media(max-width: 70rem) {
    .app-page-header .container {
        flex-direction: column;
    }
}

.app-page-header h1 a {
    color: #313131;
    text-decoration: none;
}
.app-page-header .app-page-header-title {
    margin-bottom: 0;

    font-size: 1.5rem;
    line-height: 2rem;
}

.app-page {
    padding-bottom: 10rem;
}
@media(max-width: 70rem) {
    .app-page {
        padding-bottom: 5rem;
    }
}

.container {
    max-width: 70rem;
    margin-left: auto;
    margin-right: auto;
    padding-left: .5rem;
    padding-right: .5rem;
}

.galleries {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-evenly;
}

.gallery-cover {
    width: 20rem;
    max-width: 100%;
    margin-bottom: 2rem;
    margin-right: .5rem;
}

.gallery-cover a {
    text-decoration: none;
}
.gallery-cover img {
    width: 100%;
    height: 12rem;

    border-radius: 0.25rem;
}
.gallery-cover .gallery-cover-name {
    display: block;

    font-size: 1rem;
    font-weight: bold;

    overflow: hidden;
    text-overflow: ellipsis;
}

.gallery-photos {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-evenly;

    margin-top: 2rem;
}

.photo {
    width: 20rem;
    max-width: 100%;
    margin-right: .5rem;
    margin-bottom: 2rem;
}
.photo img {
    width: 100%;
    height: 12rem;
}

.to-the-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;

    padding: .25rem .5rem;

    color: #fff;
    text-decoration: none;
    font-size: .9rem;

    background-color: #404c9e;
    border-radius: .25rem;

    transition: background .2s ease-in-out;
}
.to-the-top:hover {
    color: #fff;

    background-color: #7586f0;
}