main.css

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

header {
  height: 50px;
  background-color: #B8E5FF;
  margin-bottom: 15px;
}

h1 {
  text-align: center;
  font-size: 65px;
  margin-top: 23%;
}

h2 {
  margin: 0 auto;
  font-size: 45px;
}

.background {
  height: 100%;
  background-color: #B8E5FF;
}

button {
  background-color: #FCFCFC;
  border: none;
  padding: 15px 32px;
  text-align: center;
  display: inline-block;
  font-size: 16px;
}

button:hover {
  background-color: #EBEBEB;
}

.button {
  text-align: center;
  margin-top: 10px;
}

form {
  font-size: 30px;
  text-align: center;
}

input[type=text], select {
    width: 38%;
    padding: 12px 20px;
    margin: 8px 0;
    display: inline-block;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 20px;
}

input::placeholder {
  font-size: 20px;
}

a {
  font-size: 25px;
  text-decoration: none;
  color: black;
}

p {
  padding-top: 10px;
  font-size: 18px;
  padding-bottom: 10px;
}

.content {
  width: 60%;
  margin: 0 auto;
}

li {
  list-style: disc;
}

ul {
  padding-bottom: 15px;
  margin-left: 20px;
}

#start {
  background-color: #B8E5FF;
  float: right;
  margin-bottom: 20px;
  margin-top: 10px;
}

#start:hover {
  background-color: #EBEBEB;
}

#line {
  text-align: center;
}