* {
  margin: 0;
  padding: 0;
}

a {
  color: #1c94c4;
}

header,
footer {
  background-color: #eee;
  padding: 10px;
  border-bottom: 1px solid #ccc;
  margin-bottom: 30px;
  text-align: center;
}

main {
  width: 100%;
  margin-bottom: 100px;
}

form {
  width: 90%;
  display: flex;
  flex-direction: column;
  margin: 0 auto;
  align-items: flex-end;
}

textarea {
  width: 100%;
  height: 300px;
  resize: vertical;
}

#btnSubmit {
  color: #1c94c4;
  background-color: #f9f9f9;
  border: 1px solid #cccccc;
  border-radius: 5px;
  width: 100px;
  text-decoration: none;
  padding: 10px;
  cursor: pointer;
  margin-top: 10px;
  font-weight: bold;
}

#result {
  width: 90%;
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
}
#result h1 {
  margin-right: 10px;
}
#gpaResult {
  font-weight: bold;
}
#imgComoCalcular {
  margin: 0 auto;
  margin-top: 20px;
  width: 90%;
  text-align: center;
}
img {
  background: #ccc;
  padding: 3px;
  border-radius: 10px;
}

footer {
  margin-bottom: 0;
  border-bottom: 0;
  border-top: 1px solid #ccc;
  margin-top: 20px;
  line-height: 25px;
  position: fixed;
  width: 100%;
  bottom: 0;
}

.hidden {
  display: none !important;
}