The internet world, where people spend most of their daily lives, is becoming more and more attractive with improvements. When we compare today's current techniques with the first web design techniques, we can observe very significant differences and changes in the meantime. Many different techniques have been developed on web pages. One of these is the Bootsrap technique. What is Bootsrap? How does it work? What are the benefits? What is the most important feature? Let's briefly mention these: Bootsrap is a css framework and it is a process that allows your web sites to perfectly match by detecting the resolution of all running devices. This technique allows for faster coding, css and js files are reduced to the minimum dimensions, so pages can be viewed faster, with virtually all of them built in. For example, we can count buttons, images, pictures, tables, sliders, dropdrown menus and many more controls. it detects itself and removes the resolution-related issues altogether. All known web pages can be run smoothly with browsers. What is Bootsrap? How to download? Let's explain this briefly: You can reach the download page by typing http://getbootstrap.com/getting-started/ in the address field of the web browser you are using to download Bootsrap. You can download it by clicking Download Bootsrap button here. After downloading this file, you have to go through the installation process. In fact, the installation process takes place with a simpler process than you might think. After downloading, you need to copy the downloaded three folders to the folder where the project is located. We write the name of the split bootsrap files we called our Css and js code. Example for css line In addition to being able to get many elements ready, you do not have to do icons and fonts, since it contains fonts and icons. It offers an integrated structure. To keep the resolution unchanged, the page it contains has a grid system that allows every element to be displayed smoothly and smoothly. Bootsrap, which is constantly in development, also successfully adapts to flat designs. This adaptation was accomplished by renewing the website and the code system. What is Bootsrap above, what are its features? We tried to define it as a summary.