#continer {
  width: 37%;
  box-shadow: 0 0 3px rgba(0, 0, 0, 0.3);
  background: #fff;
  padding: 2%;
  margin: 5% auto;
  padding-left: 5%;
}
#icon {
  margin-left: 90%;
  cursor: pointer;
}
#input-box {
  margin-bottom: 20px;
  margin-top: 10px;
  height: 40px;
  width: 75%;
}
#pera {
  display: flex;
}
h3 {
  margin-bottom: 0px;
}
#un,
#un1 {
  text-decoration: underline;
}
#input-pass {
  margin-bottom: 0px;
  margin-top: 10px;
  height: 40px;
  width: 75%;
}
#checkbox {
  margin-top: 20px;
  margin-bottom: 20px;
}

button {
  height: 40px;
  width: 75%;
  background-color: black;
  color: white;
  margin-top: 20px;
  cursor: pointer;
}
@media only screen and (min-width: 0px) and (max-width: 375px) {
  #continer {
    width: 100%;
  }
}
@media only screen and (min-width: 376px) and (max-width: 768px) {
  #continer {
    width: 80%;
  }
}