Fix style

src/pages/Admin/components/registerMember/registerMember.module.css

@@ -1,13 +1,13 @@
 .leftBlock {
-    width: 40%;
+    width: 100%;
+    max-width: 720px;
     display: flex;
     flex-direction: column;
     align-items: center;
-    height: 100%;
     min-height: calc(100vh - 260px);
     box-sizing: border-box;
     padding: 20px;
-    margin: 0;
+    margin: 0 auto;
 }
 
 .registerMemberHeader {
@@ -15,17 +15,38 @@
     align-items: center;
     justify-content: center;
     width: 100%;
-    margin-bottom: 10px;
+    margin-bottom: 20px;
 }
 
 .registerForm {
+    width: 100%;
     display: flex;
     flex-direction: column;
-    gap: 10px;
-    align-items: center;
-    justify-content: center;
+    gap: 16px;
+    align-items: stretch;
+}
+
+.registerForm input {
+    width: 100%;
+    box-sizing: border-box;
+}
+
+.registerForm button {
+    width: 100%;
 }
 
 .modalContent {
     text-align: center;
 }
+
+@media (min-width: 768px) {
+    .leftBlock {
+        width: 70%;
+    }
+}
+
+@media (min-width: 1024px) {
+    .leftBlock {
+        width: 40%;
+    }
+}