* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font: inherit;
    font-size: 100%;
}

html {
    font-size: 20px;
}

body {
    padding: 2rem 2rem 4rem 2rem;
    font-family: 'DM Sans', sans-serif;
    line-height: 1.3;
    background: #eee;

    max-width: 1200px;
    margin: auto;
}

.skip-link {
    opacity: 0;
}

.skip-link:focus {
    opacity: 1
}

main {
}

header {
    margin-bottom: 3.9em;
}

header p {
    font-size: 1.5em;
}

h1 {
    font-size: 3em;
    line-height: 1;
    margin-bottom: .5em;
    font-weight: bold;
    color: #666;
}

h1 span {
    text-transform: uppercase;
    letter-spacing: .05em;
    font-size: .98em;
    color: #000;
}

h2 {
    font-size: 1.5em;
    margin-bottom: .65em;
    margin-top: 2.6em;
}

img {
    max-width: 100%;
}

a {
    color: darkblue;
}

a:hover {
    text-decoration: none;
}

p, ul, ol {
    margin-bottom: 1.3em;
}

strong {
    font-weight: bold;
}

ul {
    margin-left: 1em;
}

ol {
    list-style-type: none;
}

li {
    margin-top: .65em;
}

section[aria-labelledby="section-proben"] {
    display: flex;
    gap: 12px;
}

section[aria-labelledby="section-proben"] a {
    flex: 1 1 0;
}

section[aria-labelledby="section-proben"] a img {
    border: solid 1px #666;
    margin-bottom: 6px;
}

@media (max-width: 700px) {
    html {
        font-size: 16px;
    }

    section[aria-labelledby="section-proben"] {
        flex-direction: column;
    }
}