html {
    box-sizing: border-box;
    font-size: 62.5%;
    height: 100%;
}

*, *::before, *::after {
    box-sizing: inherit;
    margin: 0;
    padding: 0;
}

main section {
  width: 900px;
  margin-left: auto;
  margin-right: auto;
  font-size: 150%;
  background-color: bisque;
}

header input {
  margin-right: 5px;
  font-size: 160%;
}

header {
  text-align: center;
}
ul {
    list-style-type: none;
    display: flex;
    justify-content: space-evenly;
}

nav {
    background-color: aquamarine;
    margin: 0px;
    padding: 0px;
}
h1 {
  text-align: center;
  margin-bottom: 6px;
}
h3 {
  margin-bottom: 6px;
}
article {
    background-color: cadetblue;
}
nav a {
    text-decoration: none;
    color: rgb(0, 0, 0);
    font-size: 18px;
}
nav li {
    padding: 10px;
    flex: 1 0 auto;
    text-align: center;
}
.menu ul {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    font-size: 10px;    
}
.menu ul a {
    font-size: small;
    text-align: center;
}
.menu li {
    padding: 0px;
    margin: 0px;
}
img {
    font-size: smaller;
}
p { 
  font-size: 120%;
}
.info {
  margin-bottom: 8px;
  margin-top: 2px;
}
.menu ul{
  font-size: 175%;
}
.Kontakte { 
text-align: center;
width: 900px;
margin-left: auto;
margin-right: auto;
font-size: 150%;
}