To begin test, open DevTools, select the Elements panel. Expand the Styles pane in the sidebar.

• Choose the <div class="classTest"...> element in the DOM tree. You should see the following element styles in the ".classTest (inline stylesheet)" section:

    -webkit-transform:skew(-10deg,-3deg);
    color: green;
    background: #CCC;
    border: 2px solid blue;
    padding: 5px 6px 7px 8px;
  

  While changing all the property values, you should see corresponding live page changes.
• Double click the "-webkit-transform" rule and place the cursor at the second argument (-3deg).
• Press Up/Down keys do see the argument value change in 1.0 steps (0.1 steps in the [-1; 1] range).
• Press Shift+Up/Down keys to see the argument value change in 10.0 steps.
• Press Alt(Cmd)+Up/Downkeys to see the argument value change in 0.1 steps (1.0 steps in the [-1; 1] range).
• Move the mouse pointer within the section to display checkboxes to the right of the property values.
• Click the checkboxes to disable/enable the corresponding style properties and observe the page changes. You can disable the "-webkit-transform" property if the element overlaps the instructions.
• Double-click the "background" rule and alter the color to "#FFF". The text background should turn white.
• Double-click the "color" rule and alter the color to "black". The text background should turn black.
• Expand the "padding" shorthand property using the arrow at the left. You should see the following property values beneath: padding-top: 5px; padding-right: 6px; padding-bottom: 7px; padding-left: 8px;
• In the "Styles" pane titlebar click the gear button and choose "New Style Rule". In the editbox that appears, type:

  font-family: monospace;
  

  The font of the test string should alter to a monospaced one.