* {
    box-sizing: border-box;
}

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

canvas {
    border: 2px solid #d3d3d3;
}

a:link, a:visited {
  color: salmon;
  text-decoration: none;
}
a:hover, a:active {
  color: darksalmon;
}

h3 {
  text-decoration: none;
  size: 14px;
  color: #333;
  letter-spacing: 2px;
  font-weight: normal;
}

.header {
  padding: 10px;
  text-align: center;
  color: white;
  background-color: lightgrey;
}

.title {
  color: #333;
  font-weight: normal;
  letter-spacing: 4px;
}

.navbar {
  display: flex;
  background-color: #333;
}

.navbar a {
  color: white;
  padding: 14px 20px;
  text-align: center;
}

.navbar a:hover {
  background-color: #ddd;
  color: black;
}

.row {
  display: flex;
  flex-wrap: wrap;
}

.side {
  flex: 30%;
  background-color: #f1f1f1;
  padding: 20px;
}

.main {
  flex: 70%;
  background-color: white;
  padding: 20px;
}
.main p {
  text-align: center;
  font-family: monospace;
  font-size: 1.5em;
}
.footer {
  padding: 20px;
  text-align: center;
  background: #ddd;
}

.red {
  width: 100px;
  height: 100px;
  background-color: red;
}
.param {
  padding-top: 8px;

}
.param input[type="text"] {
  width: 100%;
  margin-bottom: 8px;
  padding: 8px;
  border: 2px solid #d3d3d3;
}

button {
  background-color: #333;
  border: none;
  color: white;
  padding: 8px 16px;
  text-decoration: none;
  margin: 4px 2px;
  min-width: 100px;
}

button:hover {
  background: #ddd;
  color: black;
}

.about {
  max-width: 800px;
  margin: auto;
  padding: 100px;
}
.signature {
  font-family: monospace;
}

@media screen and (max-width: 700px) {
  .row, .navbar {
    flex-direction: column;
  }
}

#myCanvas {
  border: solid black 1px;

}