Update INSTALL.md

Author: brittjay0104

INSTALL.md

@@ -20,7 +20,7 @@ To load the virtual machine, you will need to import the **CausalTesting_Artifac
 
 Once the virtual machine is imported, it will appear in your VirtualBox Manager as **CausalTesting_Artifact**. You can now start the virtual machine by clicking the green **"Start"** arrow at the top of the VirtualBox Manager (see screenshot below).
 
-<img src="https://drive.google.com/thumbnail?id=1VjrcBPwrz4LO8cwlspb0TmEUcqwMoCp-" alt="VirtualBox Manager" style="float: left; margin-right: 10px;" />
+<img src="https://drive.google.com/thumbnail?id=1VjrcBPwrz4LO8cwlspb0TmEUcqwMoCp-" alt="VirtualBox Manager" style="float: center" />
 
 Once the virtual machine loads, Eclipse will open -- this process may take a few minutes. Once Eclipse opens, there will be 7 files opens labeled *Defect 0- Defect 6*. At the bottom of the window, the Tasks View is open with a list of TODOs. Each TODO is attached to the failing test for each defect. For example, **TODO: Test 00 (Training)** is associated with *Defect_0_Training*.
 
@@ -42,4 +42,4 @@ To see Holmes output for each defect:
 
 If you are running Holmes on *Defect 0*, the editor will automatically go to the top of the file as Holmes generates and executes tests. This process will take a minute or two; eventually the Holmes View will open with results of the execution.
 
-If you are running Holmes on *Defects 1-6*, after a few seconds, the Holmes View will open with the pre-processed results used in our user study. For each of these defects, the output includes the original failing test, generated passing tests, and generated faiing tests. You can access the execution trace for each test by clicking the "See Execution Trace" button under the test of interest.
+If you are running Holmes on *Defects 1-6*, after a few seconds, the Holmes View will open with the pre-processed results used in our user study. For each of these defects, the output includes the original failing test, generated passing tests, and generated faiing tests. You can access the execution trace for each test by clicking the "See Execution Trace" button under the test of interest.