*{
  padding: 0;
  margin: 0;
}
body{
  background: royalblue;
}
h1{
    color: white;
    font-size: 25px;
    margin: 60px 0 10px 0;
    font-family: sans-serif;
}
input{
    width: 150px;
    height: 45px;
    background: transparent;
    color: white;
    font-size: 20px;
    outline: none;
    padding: 0 13px;
    border: 2px solid white;
    border-radius: 10px;
}
.btn {
    margin-top: 15px;
    padding: 15px 25px;
    background: skyblue;
    border: none;
    color: white;
    font-size: 20px;
    border-radius: 20px;
    text-transform: uppercase;
}
.block{
    display: flex;
    flex-direction: column;
    align-items: center;
}
.block h3{
    color: red;
    font-size: 25px;
    font-family: sans-serif;
    padding-top: 20px;
    display: none;
}