.tab{background-color:#f1f1f1;border:1px solid #ccc;overflow:hidden}.tab button{background-color:inherit;border:none;cursor:pointer;float:left;outline:none;padding:14px 16px;transition:.3s}.tab button:hover{background-color:#ddd}.tab button.active{background-color:#ccc}.tabcontent{animation:fadeEffect 1s;border:1px solid #ccc;border-top:none;display:none;padding:6px 12px}@keyframes fadeEffect{0%{opacity:0}to{opacity:1}}.margin-bottom{margin-bottom:2rem}.margin-top{margin-top:2rem}.center{margin:0 auto}h1{font-size:28px}h1,h2{color:#333;font-weight:700}h2{font-size:24px}h3{font-size:20px}h3,h6{color:#333;font-weight:700}h6{font-size:18px}p{color:#555;font-size:16px}a{color:#333;text-decoration:none}a:hover{text-decoration:underline}