diff --git a/src/pages/InterestGroup/CommentForm.css b/src/pages/InterestGroup/CommentForm.css
new file mode 100644
index 0000000..7d80eec
--- /dev/null
+++ b/src/pages/InterestGroup/CommentForm.css
@@ -0,0 +1,100 @@
+/* CommentForm.css */
+.comment-form-container {
+  margin-top: 1rem;
+  padding: 1rem;
+  background-color: #f8f4e9; /* 米白色背景 */
+  border-radius: 8px;
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
+  transition: all 0.3s ease;
+}
+
+.comment-form {
+  display: flex;
+  flex-direction: column;
+}
+
+.form-group {
+  position: relative;
+  margin-bottom: 1rem;
+}
+
+.comment-input {
+  width: 100%;
+  min-height: 80px;
+  padding: 1rem;
+  border: 1px solid #e6d5b8; /* 米棕色边框 */
+  border-radius: 6px;
+  background-color: #fff;
+  font-size: 1rem;
+  line-height: 1.5;
+  resize: vertical;
+  transition: all 0.3s ease;
+  outline: none;
+}
+
+.comment-input:focus {
+  border-color: #d4a5a5; /* 粉色边框 */
+  box-shadow: 0 0 0 3px rgba(212, 165, 165, 0.2); /* 粉色阴影 */
+}
+
+.floating-label {
+  position: absolute;
+  top: -8px;
+  left: 12px;
+  padding: 0 4px;
+  background-color: #fff;
+  color: #8c7a51; /* 深棕色文本 */
+  font-size: 0.875rem;
+  transition: all 0.2s ease;
+  pointer-events: none;
+  opacity: 0;
+  transform: translateY(10px);
+}
+
+.form-group.focused .floating-label,
+.comment-input:not(:placeholder-shown) + .floating-label {
+  opacity: 1;
+  transform: translateY(0);
+}
+
+.form-actions {
+  display: flex;
+  justify-content: flex-end;
+  gap: 0.75rem;
+}
+
+.cancel-button,
+.submit-button {
+  padding: 0.5rem 1.25rem;
+  border: none;
+  border-radius: 4px;
+  font-size: 0.9rem;
+  font-weight: 500;
+  cursor: pointer;
+  transition: all 0.3s ease;
+}
+
+.cancel-button {
+  background-color: transparent;
+  color: #8c7a51; /* 深棕色文本 */
+}
+
+.cancel-button:hover {
+  background-color: #f5f5f5;
+}
+
+.submit-button {
+  background-color: #d4a5a5; /* 粉色背景 */
+  color: #fff;
+}
+
+.submit-button:hover {
+  background-color: #c28d8d; /* 深粉色 */
+  transform: translateY(-1px);
+  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
+}
+
+.submit-button:disabled {
+  background-color: #e6d5b8; /* 米棕色 */
+  cursor: not-allowed;
+}
\ No newline at end of file