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strong.inactive{color:red}.navbar{background-color:#333;padding:10px}.menu{list-style-type:none;display:flex;gap:20px;margin:0;padding:0;color:#fff}.menu>li{position:relative;cursor:pointer}.menu>li:hover{color:#fc0}.dropdown-content{display:none;position:absolute;top:25px;left:0;background-color:#444;min-width:160px;z-index:1000}.dropdown-content li{padding:10px}.dropdown-content li:hover{background-color:#555}.dropdown:hover .dropdown-content{display:block}.button-menu{width:100px;height:35px;line-height:15px;padding:8px;font-size:14px;font-weight:700;color:#f0f8ff;border-radius:4px;border:1px solid #ccc;background-color:#3090c7;cursor:pointer;margin-right:10px}.button-menu{padding:"6px 12px";background-color:#3090c7;color:#fff;border:1px solid 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small{color:#555}.notice-content{margin-top:10px;line-height:1.4}body{margin:0;font-family:Arial,sans-serif}header,nav{background-color:#f8f8f8;padding:10px 20px}nav button{margin-right:10px}.main{padding:20px}