Hello sarahdc,
It can be done by css. Follow below steps:
1. Login as admin and go on theme customizer Dashboard >> Apperance >> Customize or Click on Custimze link on top bar from front-end.
2. Navigate Additional CSS and put below css into textarea then click on Save & Publish button.
.last {
display:none !important;
}
.one_fourth {
width: 28.33% !important;
}

If Additional CSS Option is not shown then put css code into your current theme’s style.css located wp-content/themes/colorway/ folder.
Note : All Changes you done in style.css or other file are gone when you update theme. So prefer Child Theme.
Hope this will helps you.
Hi @saurabhdhariwal,
I really appreciate your efforts in exploring the things and sharing your knowledge here.
The solution is really helpful…!
Sorry for the delay in getting back here. Thank you very much! That worked beautifully!
Sarah