* {
  margin: 0%;
  padding: 0%;
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

.main-div {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.content-div {
  padding: 0.1em 2em 2em 2em;
}

.form-div {
  border: #00000026 0.1em solid;
  box-shadow: 0 2px 20px 2px rgb(150 150 150);
  width: 43%;
}

.form-div h1 {
  display: block;
  background-color: #1877f2;
  padding: 0.4em;
  text-align: center;
  color: aliceblue;
}

.name-div,
.email-phone-div,
.password-div,
.gender-birth-div {
  display: flex;
  justify-content: space-between;
  margin: 2em;
}

.buttons-div{
  margin: 2em;
}

.first-name-div,
.last-name-div,
.mail-div,
.phone-div,
.pass-div,
.con-pass-div,
.gender-div,
.female-div,
.birth-div {
  width: 46%;
}

#first-name-input,
#last-name-input,
#email-input,
#phone-input,
#pass-input,
#confirm-pass-input,
#gender-label,
#birth {
  margin-top: 0.5em;
}

form {
  color: #1877f2;
  font-weight: bold;
}

input {
  padding: 0.3em;
  border-color: rgba(0, 0, 0, 0.237);
  border-radius: 0.3em;
  color: rgba(0, 0, 0, 0.596);
  font-weight: bold;
}

input::placeholder {
  color: rgba(29, 28, 28, 0.575);         
  font-size: 14px;    
  font-style: italic;  
}

.btn {
  border: #1360c4;
  background-color: #1360c4;
  color: aliceblue;
  border-radius: 0.6em;
  padding: 1em;
}

@media (max-width: 1125px) {
  .name-div,
  .email-phone-div,
  .password-div,
  .gender-birth-div {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }

  input {
    margin-bottom: 1.5em;
    width: 90%;
  }

  #gender-male-label , #gender-femal-label{
    width: 10%;
  }

  #gender-male-label {
    margin-bottom: 0em;
  }

  .first-name-div,
  .last-name-div,
  .mail-div,
  .phone-div,
  .pass-div,
  .con-pass-div,
  .gender-div,
  .female-div,
  .birth-div {
    width: 75%;
  }

  .form-div {
    width: 60%;
  }
}

@media (max-width: 552px) {
  .content-div {
    padding: 0%;
  }

  .name-div,
  .email-phone-div,
  .password-div,
  .gender-birth-div {
    margin: 1em;
  }
}