@charset "utf-8";
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

img {
  width: 100%;
  vertical-align: bottom;
}

body {
  max-width: 100%;
}

main {
  width: 80%;
  margin: 0 auto;
}

h1 {
  font-family: "Dela Gothic One", sans-serif;
  font-size: 3em;
  padding: 1%;
}

section button {
  padding: 2%;
  margin: 40px auto;
  background-color: salmon;
  border-radius: 10%;
  text-align: center;
  cursor: pointer;
}

table {
  padding: 30px;
  margin: 0 auto;
  border: 3px solid;
}
#teacher,
.classmate {
  border: 1px solid;
}

.space {
  padding: 10px;
}

.classmate {
  padding: 30px;
}