@import url('https://fonts.googleapis.com/css2?family=Abril+Fatface&family=Roboto:ital,wght@0,100;0,300;0,400;1,100;1,300;1,400&display=swap');

header {
  padding: 44px 0;
  text-align: center;
}

h1 {
  font-size: 55px;
  margin: 0 0 17px 0;
  font-family: 'Abril Fatface', sans-serif;
  text-decoration: underline;
}

body {
  margin: 0;
  padding: 0;
  font-family: sans-serif;
}

.bg {
  position: fixed;
  background-image: url(stoneRoot.jpg);
  background-size: cover;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: -100;
  filter: blur(4px) contrast(80%) saturate(110%) sepia(22%);
}

.eingabe {
  position: absolute;
  display: flex;
  transform: translateX(-50%);
  left: 50%;
}

.funInput {
  position: relative;
  margin: 0 1rem;
  width: 5rem;
  border: none;
  border-bottom: solid 1px #000;
  padding: 0.5rem 1em;
  background-color: transparent;
  font-size: 17px;
  text-align: center;
  font-family: 'Roboto', sans-serif;
}

.funInput:focus {
  outline: none;
}


.funInputZeichen {
  position: relative;
  display: inline-grid;
  text-align: center;
  align-items: center;
  justify-content: center;
  margin: 0 1rem;
  font-size: 22px;
}

.root {
  display: flex;
  background-image: url("wurzel.png");
  background-size: cover;
  background-position: center;
  padding-top: 0.5rem;
}


section {
  padding: 40px 0;
  text-align: center;
}

#a {
  border-left: dotted 2px red;
  border-top: dotted 2px red;
  border-right: dotted 2px red;
}

#b {
  border-left: dotted 2px green;
  border-top: dotted 2px green;
  border-right: dotted 2px green;
}

#c {
  border-left: dotted 2px blue;
  border-top: dotted 2px blue;
  border-right: dotted 2px blue;
}

.container {
  margin: 0 auto;
  padding: 0 20px 0 20px;
  max-width: 900px;
  align-items: center;
  align-content: center;
}

#diagramm {
  background-color: rgba(255, 255, 255, 0.35);
  padding: 1rem;
}