Border Around Contact Form 7

I have embedded contact form 7 in the sidebar of a page. but it looks plain. I want to have color around the form. im not good with coding. could someone help me?

https://www.anza-solutions.com/mobile-apps-development-singapore

Borders/Colors like this
https://www.google.com.sg/search?q=contact+form&biw=1366&bih=667&source=lnms&tbm=isch&sa=X&ei=M3ZhVNPKO42gugT23oCIBw&ved=0CAYQ_AUoAQ#facrc=_&imgdii=_&imgrc=iCMse2lrEnXeRM%253A%3BInvZDYp-37ivsM%3Bhttp%253A%252F%252Fwww.design3edge.com%252Fwp-content%252Fuploads%252Fdemo%252Ffresh-contact-form-design-demo.jpg%3Bhttp%253A%252F%252Fwww.design3edge.com%252F2013%252F06%252F20%252Ffresh-contact-form-design%252F%3B600%3B659

https://www.google.com.sg/imgres?imgurl=http%3A%2F%2Fdoublemesh.com%2Fwp-content%2Fuploads%2F2012%2F07%2FMetro-UI-Style-Contact-Form-PSD-01.jpg&imgrefurl=http%3A%2F%2Fwww.gopixpic.com%2F584%2Ffree-metro-ui-template-2%2Fhttp%3A%257C%257Csmashinghub*com%257Cwp-content%257Cuploads%257C2013%257C07%257Cfree-metro-ui-template-2*png%2F&h=600&w=550&tbnid=I-skZlZEx0OXiM%3A&zoom=1&docid=pUua2wmgyKX_lM&ei=kHdhVLmAL4OWuQS8woHQBg&tbm=isch&ved=0CA4QMygGMAY4rAI&iact=rc&uact=3&dur=736&page=15&start=291&ndsp=21