body {
    margin: 0;
}
h1 {
    margin: 0;
}

.headline {
    background: red;
    color: white;
    font-family: 'Overpass Mono', monospace;
    font-weight: 700;
    text-align: center;
    margin: 0;
}

h1 {
    color: white;
    font-family: 'Overpass Mono', monospace;
    font-weight: 600;
    text-align: center;
    font-size: 28px;
}
.intro {
    width: 100%;
    background-color: #111;
    background-size: cover;
    padding=bottom: 20px;
}

.monotext {
    color: white;
    font-family: 'Overpass Mono', monospace;
    font-weight: 400;
    margin: 20%;
    font-size: 18px;
    margin-top: 0;
    margin-bottom: 0;
}

.mathformula {
    color: white;
    text-align: center;
    margin: 0;
}

.btn-tex {
    background: #222;
    color: #bbb;
    fill: #bbb;
    position: relative;
    top: 50%;
    left: 50%;
}

.btn-tex:hover {
    background: red;
    color: #228;
    -webkit-transform: scale(1.2);
    -webkit-transform: rotate(30deg);
}