style.css

@import url('https://fonts.googleapis.com/css2?family=Rokkitt:wght@600&display=swap');

body{
  display: flex;
  flex-direction: column;
  margin: 0px;
  font-family: 'Rokkitt', serif;
  background-color: #313131;
}
.main-div{
    background-color: #313131;
    width: fit-content;
    height: 400px;
    color:white;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.head1-div{
  display: flex;
  flex-direction: column;
  align-items: center;
}

.head1{
    background-color: #555353;
    font-size: 25px;
    font-weight: 600;
    padding: 5px;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.336);
    border-width: 5px;
    width: 360px;
    margin-top: 0;
    margin-left: 0;
    margin-right: 0;
}

.button {
  font-family: 'Rokkitt', serif;
  font-size: 20px;
  background-color: #555353;
  border: none;
  color: white;
  padding: 20px;
  text-align: center;
  margin: 4px 2px;
  margin-left: 10px;
  margin-right: 10px;
  margin-bottom: 10px;
  border-radius: 15px;
  position: relative;
  width: 350px;
}

.add{
  font-family: 'Rokkitt', serif;
  background-color: #313131;
  border-color: aliceblue;
  border-width: 1px;
  color: white;
  padding: 20px;
  text-align: center;
  display: block;
  font-size: 16px;
  margin: 4px 2px;
  border-radius: 15px;
  position: relative;
  top: 30%;
  width: 350px;
}

.textBox {
  font-family: 'Rokkitt', serif;
  font-size: 20px;
  background-color: #555353;
  border: none;
  color: white;
  padding: 20px;
  text-align: center;
  display: block;
  font-size: 16px;
  margin: 4px 2px;
  border-radius: 15px;
  position: relative;
  border: 1px solid white;
  width: 308px;
}