style.css

/* Center the parent div */
.center {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background-color: #f9f9f9;
}

/* Style the captcha background and canvas */
#captchaBackground {
  background-color: #fff;
  padding: 20px;
  text-align: center;
  border-radius: 10px;
  box-shadow: 0px 0px 10px rgba(0,0,0,0.2);
}

#captcha {
  display: block;
  margin: auto;
  background: linear-gradient(to right, #e91e63, #9c27b0);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-size: 3em;
}

/* Style the text box and buttons */
#textBox {
  display: block;
  margin: 20px auto;
  padding: 10px;
  border: 1px solid;
  outline: none;
  border-radius: 50px;
  font-size: 2em;
  color: #777;
  background-color: #fff;
  width: 80%;
  transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

#textBox:hover {
  border: none;
  transform: scale(1.02);
  box-shadow: 0px 0px 10px rgba(0,0,0,0.2);
}

#submitButton {
  background-color: #1e88e5;
  color: #fff;
  padding: 10px 20px;
  border: none;
  font-size: 1.5em;
  cursor: pointer;
  margin-right: 10px;
  border-radius: 50px;
  outline: none;
  box-shadow: 0px 0px 10px rgba(0,0,0,0.2);
}

#submitButton:hover {
  background-color: #1976d2;
  transform: scale(1.02);
}

#refreshButton {
  background-color: #f9f9f9;
  color: #777;
  padding: 10px 20px;
  border: none;
  font-size: 1.5em;
  cursor: pointer;
  border-radius: 50px;
  outline: none;
  box-shadow: 0px 0px 10px rgba(0,0,0,0.2);
}

#refreshButton:hover {
  background-color: #eee;
  color: #555;
  transform: scale(1.02);
}

/* Style the output span */
#output {
  display: block;
  margin-top: 20px;
  font-size: 1.5em;
  color: #777;
  text-align: center;
}