styles.css

* {
    font-family:'Poppins', sans-serif;
    margin: 10px 5px;
    max-width: 100%;
    align-items: center;
    text-align: center;
}

body {
  margin: auto 15%;
}

/* text */
h1, 
h2,
p,
label {
    color: #5F9DF7;
    font-size: 20px;
}

h1 {
  margin-top: 5%;
    font-size: 30px;
}

a {
    color: #075FDF;
}

.footer {
    font-size: small;
}

/* form */
select {
    background-color: #9EC6FF;
    color: #fff;
    box-shadow: none;
    overflow: hidden;
    border: none;
    border-radius: 50px;
    padding: 5px 10px;
    margin: 10px;
    width: 250px;
    cursor: pointer;
    max-width: 200px;
}

#button {
    background-color: #5F9DF7;
    color: #fff;
    border: none;
    border-radius: 50px;
    padding: 10px 20px;
    font-size: large;
    flex-wrap: wrap;
    width: auto;
    cursor: pointer;
}

/* for cellphones */
@media (max-width: 600px) {
  body {
    margin: auto 5px;
  }

  select,
  label {
    font-size: 20px;
  }

  #button {
    font-size: 25px;
  }

  #description {
    font-size: 15px;
    margin: auto 30px;
  }

  h1 {
    margin-top: 15%;
  }
}