stylesheet.css

body {
  margin: 0px;
}
table {
  border-color: navy;
  border-width: medium;
  border-style: solid;
  margin-bottom: 20px;
  margin-left: auto;
  margin-right: auto;
  border-collapse: collapse;
}
h1 {
  text-align: center;
  color: #003366;
  font-size: 5vw;
}
h2 {
  text-align: center;
  width: 100%;
  background-color: #003366;
  color: white;
  padding: 10px;
  font-size: 5vw;
}

td {
  border-width: medium;
  width: 80px;
  height: 80px;
  border-color: #003366;
  border-style: solid;
  text-align: center;
  background-color: white;
  font-size: 30px;
  font-weight: bold;
  cursor: pointer;
}
input {
  outline: none;
  width: 300px;
  height: 40px;
  font-size: 20px;
}
#knapper {
  text-align: center;
}
#knap {
  font-size: small;
}
tr {
  padding: 30px;
}
p {
  text-align: center;
  font-size: 12vw;
  margin-bottom: 0px;
  margin-top: 0px;
}
button {
  height: 46px;
  width: 100px;
  margin-bottom: 0px;
  margin-top: 0px;
  background-color: #003366;
  color: white;
  cursor: pointer;
  vertical-align: bottom;
}

img {
  width: 400px;
  display: block;
  margin: auto;
}