@font-face {
    font-family: 'Manrope';
    src: url(Manrope-VariableFont_wght.ttf);
}
@font-face {
    font-family: 'ShadowsIntoLight';
    src: url(ShadowsIntoLight-Regular.ttf);
}
body {
    width: 100%;
    font-family: Manrope, Helvetica, sans-serif;
    color: darkslategray;
    line-height: 1.4;
    font-size: 20px;
    padding-bottom: 4em;
}
.holder {
    width: 60%;
    margin: 0 auto;
}


h1 {
    font-size: 3em; 
    padding-top: 3em;
    font-family: ShadowsIntoLight;
}
h2, h3 {
    padding-top: 3em;
    padding-bottom: 1.5em;
}
p {
    padding: 0.5em 0;
}
h4 {
    padding-top: 1em;
}
@media screen and (max-width: 815px) {
/*** CSS für Bildschrimbreiten bis zu 769 Pixel ***/
    .holder {
        width: 90%;
        padding: 0 1em;
    }
    h1 {
        font-size: 2em;
    }
    h2 {
        font-size: 1.3em;
    }
}
form {
    width: 100%;
    margin: 0 auto;
}
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
input[type="range"]{
    -webkit-appearance: none;
    width: 100%;
    height: 20px;
    margin: 10px 0;
    background: rgba(47, 79, 79, 0.5);
}
input[type="range"]:first-of-type{
    margin-top: 30px;
}
input[type="range"]::-moz-range-thumb  {
    -webkit-appearance:none;
    appearance:none;
    width: 40px;
    height: 40px;
    border-radius: 5px;
    background: darkslategray;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance:none;
    appearance:none;
    width: 40px;
    height: 40px;
    border-radius: 5px;
    background: darkslategray;
}
.slider-labels {
    display: flex;
    justify-content: space-between;
}
button {
    font-family: ShadowsIntoLight, cursive;
    font-size: 1.3em;
    background-color: darkslategray;
    opacity: 0.8;
    color: white;
    border-radius: 25px;
    width: 350px;
    height: 50px;
    margin: 30px auto;  
   
}
button:hover {
    opacity: 0.5;
}
output {
    font-weight: bold;
}