*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;color:#333;background-color:#f8f9fa}main{min-height:calc(100vh - 200px)}.container{max-width:1200px;margin:0 auto;padding:0 2rem}a{transition:all .3s ease}button{cursor:pointer;font-family:inherit}h1,h2,h3,h4,h5,h6{line-height:1.2}.text-center{text-align:center}.mt-1{margin-top:1rem}.mt-2{margin-top:2rem}.mt-3{margin-top:3rem}.mb-1{margin-bottom:1rem}.mb-2{margin-bottom:2rem}.mb-3{margin-bottom:3rem}