diff --git a/m-test05.robot b/m-test05.robot
index 89bc064..7d94dad 100644
--- a/m-test05.robot
+++ b/m-test05.robot
@@ -6,12 +6,27 @@ ${URL}      https://git.dotya.ml/
 ${BROWSER}  chrome
 ${DELAY}    0.2
 
+${BURGER_MENU}    //*[@id="navbar-expand-toggle"]
+${BURGER_MENU_SIGN_IN}   //*[@id="navbar"]/div[2]/a[2]
+${PASSWD_FIELD}    //*[@id="password"]
+${SIGN_IN_BUTTON}   //form/div[4]/button[1]
+
 *** Keywords ***
 Screenshot page
     Capture Page Screenshot
 
+Sign In page
+    Location Should Be  https://git.dotya.ml/user/login?redirect_to=%2f
+
+Login Should Have Failed
+    Title Should Be    Sign In - dotya.ml Gitea Service
+
+Input Password
+    [Arguments]   ${PASSWD_FIELD}   ${PASSWORD}
+    Input Text    ${PASSWD_FIELD}   ${PASSWORD}
+
 *** Test Cases ***
-open homepage (mobile)
+attempt login without username (mobile)
     # based on Pixel 2 XL mobile browser declared resolution
     ${devicemetrics}=    Create Dictionary    width=${411}    height=${823}    pixelRatio=${2.0}    userAgent=Mozilla/5.0 (Linux; Mobile; Android 10) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Mobile Safari/537.36
     ${mobileemulation}=    Create Dictionary    deviceMetrics=${devicemetrics}
@@ -27,5 +42,21 @@ open homepage (mobile)
     Screenshot page
     Log Location
 
+    Click Element  ${BURGER_MENU}
+    Sleep  ${DELAY}
+    Screenshot page
+    Click Element  ${BURGER_MENU_SIGN_IN}
+    Screenshot page
+    Log Location
+    Sign In page
+
+    Input Password  ${PASSWD_FIELD}  dat_test_password
+    Screenshot page
+
+    Click Element  ${SIGN_IN_BUTTON}
+    Screenshot page
+    Log Location
+    Login Should Have Failed
+
 Post-conditions
     Close Browser