I am currently working on creating a website using Mvc asp.net in Visual Studio 2013. I have integrated my css file, 'style.css', into the project, but I am encountering unwanted white spaces and margins around headers and other key elements, even though I have set margin:0 in my css. Upon investigation, I discovered that the default bootsrap.css file in the project is responsible for this issue. I am unsure how to override the bootstrap.css file since it affects main elements such as header and container without providing specific details. As a beginner in this field, I would greatly appreciate any help or guidance on finding a solution to this problem.