body {
    width: 100%;
    position: relative;
    display: grid;
    grid-auto-flow: row;
    grid-template-columns: minmax(auto, 1000px);
    justify-content: center;
    background-color: rgb(71, 74, 87);
    scroll-behavior: smooth;
}

header {
    display: grid;
    grid-auto-flow: column;
}

h1, h2 {
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    color: blue;
    margin: 0;
}

h1 {
    font-size: 1.3rem;
}

h2 {
    font-size: 1.1rem;
}

p {
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    margin-top: 0px;
    font-size: 1rem;
}

p.leicht {
    font-size: 0.8rem;
    color: green;
    margin-top: 0.2rem;
    margin-bottom: 0;
}

p.mittel {
    font-size: 0.8rem;
    color: darkorange;
    margin-top: 0.2rem;
    margin-bottom: 0;
}

p.zeitaufwand {
    margin: 0px;
    font-size: 0.9rem;
    color: green;
    text-align: right;
}

section.loesung_druck {
    display: grid;
    grid-auto-flow: column;
    margin: 2em;
    margin-bottom: 3em;
}

.loesung {
    display: grid;
    grid-auto-flow: column;
    place-items: center;
}

.button_loesung {
    position: relative;
    display: inline-block;
    transition: 500ms;
    color: rgb(0, 175, 23);
    text-shadow: 0 0 0.05em green, 0 0 0.1em green;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    background-color: rgb(24, 255, 82);
    border: 0.2em;
    border-color: rgb(0, 195, 26);
    border-style: solid;
    border-radius: 0.5em;
    box-shadow: 0 0 0.3em green, 0 0 0.1em green, 0 0 0.1em green inset, 0em 0.3em 1em rgb(24, 255, 82);
    padding: 0.3em 0.5em;
}

.button_loesung::before {
    background-image: url(bulb-29050.svg);
    background-size: 3em 3em;
    opacity: 0;
    display: inline-block;
    position: absolute;
    left: -3.5em;
    top: -0.75em;
    width: 3em;
    height: 3em;
    content: "";
    transition: 500ms;
}

.button_loesung::after {
    background-image: url(bulb-29050.svg);
    background-size: 3em 3em;
    opacity: 0;
    display: inline-block;
    position: absolute;
    right: -3.5em;
    top: -0.75em;
    width: 3em;
    height: 3em;
    content: "";
    transition: 500ms;
}

.button_loesung:hover {
    position: relative;
    display: inline-block;
    transition: 300ms;
    color: rgba(174, 255, 25, 0.822);
    text-shadow: 0 0 0.05em rgb(68, 128, 0), 0 0 0.1em rgb(255, 106, 7);
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    background-color: rgb(49, 245, 0);
    border: 0.2em;
    border-color: rgb(0, 211, 28);
    border-style: solid;
    border-radius: 0.5em;
    box-shadow: 0 0 0.2em green, 0 0 0.1em green inset, 0em 0.3em 1em rgb(0, 255, 64), 0em 0.3em 0.8em rgb(14, 255, 74);
    padding: 0.3em 0.5em;
}

.button_loesung:hover::before {
    background-image: url(bulb-29050.svg);
    background-size: 3em 3em;
    opacity: 1;
    display: inline-block;
    position: absolute;
    left: -3.5em;
    top: -0.75em;
    width: 3em;
    height: 3em;
    content: "";
    transition: 1500ms;
}

.button_loesung:hover::after {
    background-image: url(bulb-29050.svg);
    background-size: 3em 3em;
    opacity: 1;
    display: inline-block;
    position: absolute;
    right: -3.5em;
    top: -0.75em;
    width: 3em;
    height: 3em;
    content: "";
    transition: 1500ms;
}

.druck {
    display: grid;
    grid-auto-flow: column;
    place-items: center;
}

.button_druck {
    position: relative;
    display: inline-block;
    transition: 500ms;
    color: rgb(170, 2, 44);
    text-shadow: 0 0 0.05em red, 0 0 0.1em red;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    background-color: rgb(255, 97, 202);
    border: 0.2em;
    border-color: rgb(226, 7, 142);
    border-style: solid;
    border-radius: 0.5em;
    box-shadow: 0 0 0.2em red, 0 0 0.1em red inset, 0em 0.3em 1em rgb(255, 52, 160);
    padding: 0.3em 0.5em;
}

.button_druck::before {
    display: inline-block;
    position: absolute;
    right: -70px;
    top: -5px;
    opacity: 0;
    content: url(printer-28046_50.png);
    transition: 500ms;
}

.button_druck:hover {
    position: relative;
    display: inline-block;
    transition: 300ms;
    color: rgba(255, 152, 67, 0.877);
    text-shadow: 0 0 0.05em red, 0 0 0.1em rgb(255, 106, 7);
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    background-color: rgb(255, 92, 233);
    border: 0.2em;
    border-color: rgb(255, 30, 180);
    border-style: solid;
    border-radius: 0.5em;
    box-shadow: 0 0 0.2em red, 0 0 0.1em red inset, 0em 0.3em 1em rgb(255, 92, 233), 0em 0.3em 0.8em rgb(255, 120, 250);
    padding: 0.3em 0.5em;
}

.button_druck:hover::before {
    display: inline-block;
    position: absolute;
    right: -70px;
    top: -5px;
    opacity: 1;
    content: url(printer-28046_50.png);
    transition: 1500ms;
}

.button_aufgabe {
    position: relative;
    display: inline-block;
    transition: 500ms;
    color: rgb(0, 105, 175);
    text-shadow: 0 0 0.05em blue, 0 0 0.1em blue;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    background-color: rgb(24, 163, 255);
    border: 0.2em;
    border-color: rgb(0, 101, 195);
    border-style: solid;
    border-radius: 0.5em;
    box-shadow: 0 0 0.3em rgb(0, 101, 195), 0 0 0.1em rgb(0, 101, 195), 0 0 0.1em blue inset, 0em 0.3em 1em rgb(24, 220, 255);
    padding: 0.3em 0.5em;
}

.button_aufgabe:hover {
    position: relative;
    display: inline-block;
    transition: 300ms;
    color: rgba(25, 255, 224, 0.822);
    text-shadow: 0 0 0.05em rgb(0, 134, 175), 0 0 0.1em rgb(255, 106, 7);
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    background-color: rgb(24, 209, 255);
    border: 0.2em;
    border-color: rgb(0, 101, 195);
    border-style: solid;
    border-radius: 0.5em;
    box-shadow: 0 0 0.2em blue, 0 0 0.1em blue inset, 0em 0.3em 1em rgb(0, 101, 195), 0em 0.3em 0.8em rgb(24, 255, 255);
    padding: 0.3em 0.5em;
}

.aufgabe {
    background-color: rgb(248, 248, 250);
    border-radius: 1rem;
    padding: 0.5rem 1rem;
    margin: 0.5rem 0.2rem;
    box-shadow: 0 0 0.2em rgb(238, 237, 241);
}

.aufgaben_nummer {
    background-color: rgb(210, 218, 198);
    border-radius: 1rem;
    padding: 0.5rem 1rem;
    margin: 0.2rem;
    box-shadow: 0 0 0.2em rgb(210, 218, 198);
    display: grid;
    grid-auto-flow: column;
}

.header_ueberschrift {
    background-color: rgb(189, 190, 216);
    border-radius: 1rem;
    padding: 0.5rem 1rem;
    margin: 0.5rem 0.2rem;
    box-shadow: 0 0 0.2em rgb(189, 190, 216);
}

main, header {
    margin: 0px;
}

footer {
    font-family: Verdana, Arial, sans-serif;
    font-size: 0.7rem;
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
    color: maroon;
    font-weight: normal;
    background-color: lightgrey;
    border-radius: 1rem;
    padding: 0.5rem 1rem;
    margin: 0.2rem;
    box-shadow: 0 0 0.2em lightgrey;
}

footer a {
    margin: 0.5em;
}

tr p {margin: 0;}

a.impressum_link {
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    font-size: 0.8rem;
    text-decoration: none;
    color: navy;
    transition: ease-in-out;
    transition-duration: 0.3s;
}
a.impressum_link:hover {
    text-shadow: 0.1rem 0.1rem 0.2rem rgb(73, 91, 133);
    transition: ease-in-out;
    transition-duration: 0.3s;
}

span.wert {
    color: purple;
}

span.variable {
    color: blue;
}

span.einheit {
    color: teal;
}

ol {
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    font-size: inherit;
}