diff --git a/dlls/mshtml/htmlstyle.c b/dlls/mshtml/htmlstyle.c
index 348eacc7e09..c327faa0a27 100644
--- a/dlls/mshtml/htmlstyle.c
+++ b/dlls/mshtml/htmlstyle.c
@@ -553,6 +553,11 @@ static const style_tbl_entry_t style_tbl[] = {
         DISPID_IHTMLCSSSTYLEDECLARATION2_COLUMNCOUNT,
         DISPID_UNKNOWN
     },
+    {
+        L"column-width",
+        DISPID_IHTMLCSSSTYLEDECLARATION2_COLUMNWIDTH,
+        DISPID_UNKNOWN
+    },
     {
         cursorW,
         DISPID_IHTMLCSSSTYLEDECLARATION_CURSOR,
@@ -8813,15 +8818,15 @@ static HRESULT WINAPI HTMLCSSStyleDeclaration2_get_columnCount(IHTMLCSSStyleDecl
 static HRESULT WINAPI HTMLCSSStyleDeclaration2_put_columnWidth(IHTMLCSSStyleDeclaration2 *iface, VARIANT v)
 {
     CSSStyle *This = impl_from_IHTMLCSSStyleDeclaration2(iface);
-    FIXME("(%p)->(%s)\n", This, debugstr_variant(&v));
-    return E_NOTIMPL;
+    WARN("(%p)->(%s) semi-stub\n", This, debugstr_variant(&v));
+    return set_style_property_var(This, STYLEID_COLUMN_WIDTH, &v);
 }
 
 static HRESULT WINAPI HTMLCSSStyleDeclaration2_get_columnWidth(IHTMLCSSStyleDeclaration2 *iface, VARIANT *p)
 {
     CSSStyle *This = impl_from_IHTMLCSSStyleDeclaration2(iface);
-    FIXME("(%p)->(%p)\n", This, p);
-    return E_NOTIMPL;
+    WARN("(%p)->(%p) semi-stub\n", This, p);
+    return get_style_property_var(This, STYLEID_COLUMN_WIDTH, p);
 }
 
 static HRESULT WINAPI HTMLCSSStyleDeclaration2_put_columnGap(IHTMLCSSStyleDeclaration2 *iface, VARIANT v)
diff --git a/dlls/mshtml/htmlstyle.h b/dlls/mshtml/htmlstyle.h
index 25dc12b69f2..09b044c84c5 100644
--- a/dlls/mshtml/htmlstyle.h
+++ b/dlls/mshtml/htmlstyle.h
@@ -82,6 +82,7 @@ typedef enum {
     STYLEID_CLIP,
     STYLEID_COLOR,
     STYLEID_COLUMN_COUNT,
+    STYLEID_COLUMN_WIDTH,
     STYLEID_CURSOR,
     STYLEID_DIRECTION,
     STYLEID_DISPLAY,
diff --git a/dlls/mshtml/tests/style.c b/dlls/mshtml/tests/style.c
index 1b481354fc8..6746cd048a9 100644
--- a/dlls/mshtml/tests/style.c
+++ b/dlls/mshtml/tests/style.c
@@ -921,6 +921,36 @@ static void test_css_style_declaration2(IHTMLCSSStyleDeclaration2 *css_style)
     todo_wine
     ok(V_VT(&v) == VT_BSTR && V_BSTR(&v) && !lstrcmpW(V_BSTR(&v), L"auto"), "columnCount = %s\n", wine_dbgstr_variant(&v));
     VariantClear(&v);
+
+    V_VT(&v) = VT_ERROR;
+    hres = IHTMLCSSStyleDeclaration2_get_columnWidth(css_style, &v);
+    ok(hres == S_OK, "get_columnWidth failed: %08x\n", hres);
+    ok(V_VT(&v) == VT_BSTR && !V_BSTR(&v), "columnWidth = %s\n", wine_dbgstr_variant(&v));
+    VariantClear(&v);
+
+    V_VT(&v) = VT_I4;
+    V_I4(&v) = 20;
+    hres = IHTMLCSSStyleDeclaration2_put_columnWidth(css_style, v);
+    ok(hres == S_OK, "put_columnWidth failed: %08x\n", hres);
+
+    V_VT(&v) = VT_ERROR;
+    hres = IHTMLCSSStyleDeclaration2_get_columnWidth(css_style, &v);
+    ok(hres == S_OK, "get_columnWidth failed: %08x\n", hres);
+    ok(V_VT(&v) == VT_BSTR && !V_BSTR(&v), "columnWidth = %s\n", wine_dbgstr_variant(&v));
+    VariantClear(&v);
+
+    V_VT(&v) = VT_BSTR;
+    V_BSTR(&v) = SysAllocString(L"20px");
+    hres = IHTMLCSSStyleDeclaration2_put_columnWidth(css_style, v);
+    ok(hres == S_OK, "put_columnWidth failed: %08x\n", hres);
+    VariantClear(&v);
+
+    V_VT(&v) = VT_ERROR;
+    hres = IHTMLCSSStyleDeclaration2_get_columnWidth(css_style, &v);
+    ok(hres == S_OK, "get_columnWidth failed: %08x\n", hres);
+    todo_wine
+    ok(V_VT(&v) == VT_BSTR && V_BSTR(&v) && !lstrcmpW(V_BSTR(&v), L"20px"), "columnWidth = %s\n", wine_dbgstr_variant(&v));
+    VariantClear(&v);
 }
 
 static void test_body_style(IHTMLStyle *style)