body {
  background-position: center center;
  background-image: url(cover.jpg);
}

div {
  border: 2px solid black;
  width:100%;
  max-width: 450px;
  height: 450px;
  margin: auto;
  margin-top: 70px;
  background-color: black;
  opacity: 0.6;
  box-shadow: 5px 5px 55px grey;
  border-radius: 25px;
  color: white;
  padding: 15px;

}

h3 {
  text-align: center;
  font-size: 25px;
}

.use {
  color: white;
}

input {
  width: 100%;
  border-radius:10px;
  padding: 10px;
  font-size: 20px;
  
}

#submit {
  border-color: lightgreen;
  border-radius: 6px;
  background-color: lightgreen;
  font-weight: bold;
  cursor: pointer;
}
#submit:hover {
  background-color: lightgray;
}

.checkbox {
  width: 25px;
  height: auto;
}