style.css

* {
  margin: 0;
  padding: 0;
}

.container {
  margin-top: 5rem;
  height: 100%;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  gap: 2rem;
}

.display-container {
  width: 15rem;
  /* padding: 1rem; */
  border-radius: 2rem;
  display: flex;
  justify-content: center;
  background-color: darkgray;
}

.gray {
  background-color: gray;
}
.darkgray {
  background-color: darkgray;
}

.hide {
  display: none;
}
.btn {
  width: 15rem;
  padding: 1rem;
  border-radius: 2rem;
  border: none;
  transition: 0.5s;
}
.submit {
  width: 15rem;
  padding: 1rem;
  border-radius: 2rem;
  border: none;
  transition: 0.5s;
}
.submit:hover {
  background-color: dimgray;
  cursor: pointer;
  color: white;
  font-weight: 600;
}
.login-container,
.signup-container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

form#login,
form#signup {
  width: 15rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2rem;
  transition: 0.5s;
}
input {
  height: 2rem;
  border: none;
  overflow: hidden;
  border-bottom: 1px solid darkgray;
  outline: none;
}
.checkbox-container {
  display: flex;
  align-items: center;
  gap: 1rem;
}
span {
  font-size: 0.8rem;
}
.alert {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 5rem;
}
.alert-box {
  width: 90%;
  height: 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: red;
  color: #fff;
}
.alert-box p {
  padding: 1rem;
  font-size: 1rem;
}

.alert-btn:hover {
  font-weight: 600;
  cursor: pointer;
  transition: 0.8s;
}

.alert-btn {
  padding: 1rem;
  background: transparent;
  border: none;
  color: #fff;
}