html {
  font-size: 10px;
  font-family: "Open Sans", sans-serif;
}

h1 {
  font-size: 20px;
  text-align: left;
  margin: 0;
  padding: 50px 0;
  color: #00539f;
}

h2 {
  font-size: 20px;
  text-align: center;
  margin: 0;
  padding: 20px 0;
  color: #0f539f;
  text-shadow: 0px 0px 0px rgb(182, 186, 241);
}

p,
li {
  font-size: 16px;
  line-height: 2;
  letter-spacing: 1px;
}

html {
  background-color: #00539f;
}

body {
  width: 400px;
  margin: 0 auto;
  background-color: lightgreen;
 
  border: 5px solid black;
}

select {
  font-size: 22px;
}

table {
  width: 100%;
}
a {
  font-size: 24px;
  line-height: 2;
  letter-spacing: 1px;
}

input {
  font-size: 24px;
}

img {
  display: block;
  margin: 0 auto;
}

#p_o {
  background-color: #00539f;
  width: 100%;
  font-size: 20pt;
  line-height: 2;
  letter-spacing: 1px;
}
#p_o:hover {
  background-color: #f60d0d;
 
}