body {
  font-family: Arial, sans-serif;
  padding: 20px;
  background-color: #f0f0f0;
  display: flex; justify-content: center; align-items: center; min-height: 100vh;
}
.form-group {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.custom-radio {
  display: block;
  position: relative;
  padding-left: 30px;
  margin-bottom: 12px;
  cursor: pointer;
  font-size: 16px;
  user-select: none;
  color: #333;
}

/* Hide the browser's default radio button */
.custom-radio input[type="radio"] {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

/* Create a custom radio button */
.radio-style {
  position: absolute;
  top: 0;
  left: 0;
  height: 20px;
  width: 20px;
  background-color: #eee;
  border: 1px solid #ccc;
  border-radius: 50%;
  transition: background-color 0.2s ease;
}

/* On mouse-over, add a grey background color */
.custom-radio:hover input ~ .radio-style {
  background-color: #ddd;
}

/* When the radio button is checked, add a blue background */
.custom-radio input:checked ~ .radio-style {
  background-color: #2196F3;
  border-color: #2196F3;
}

/* Create the indicator (the dot/circle - hidden when not checked) */
.radio-style:after {
  content: "";
  position: absolute;
  display: none;
}

/* Show the indicator (dot/circle) when checked */
.custom-radio input:checked ~ .radio-style:after {
  display: block;
}

/* Style the indicator (dot/circle) */
.custom-radio .radio-style:after {
  top: 6px;
  left: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: white;
}