Styling Forms with CSS

Form Styling

Style inputs, textareas, and selects consistently.

Use :focus for keyboard navigation feedback.

:valid and :invalid show validation states.

Group related fields with fieldset and legend.

Make forms responsive with flexible widths.

/* Input styling */
input[type="text"],
input[type="email"],
textarea,
select {
  width: 100%;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 16px;
  transition: border-color 0.3s;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: #4CAF50;
  box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

/* Validation states */
input:valid {
  border-color: #4CAF50;
}

input:invalid {
  border-color: #f44336;
}

/* Form layout */
.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
}

/* Submit button */
button[type="submit"] {
  background-color: #4CAF50;
  color: white;
  padding: 12px 24px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}