body {margin: 0;padding: 0;font-family: Arial, sans-serif;font-size: 16px;line-height: 1.5;color: #333;background-color: #fff;}

.header {position:fixed;top: 0;left: 0;right: 0;z-index: 999;display: flex;justify-content: space-between;align-items: center;padding: 10px 20px;background-color: rgba(red, green, blue, 0);box-shadow: 0 2px 8px rgba(0, 0, 0, 1);border-radius: 0px 0px 10px 10px;}

.header_links {display: flex;align-items: center;}

.header_logo a img {height: 50px;}

.header_link_mainpage {display: flex;align-items: center;}

.header_link_mainpage a{margin-right: 20px;font-size: 30px;font-weight: bold;color: #d74141;text-decoration: none;}

.header_link_mainpage a:hover{font-size: 35px;margin-right: 10px;color: #00aaff;background-color: #ffffff;box-shadow: 0 2px 8px rgba(0, 0, 0, 1);border-radius: 5px;}

.header_link {display: flex;align-items: center;}

.header_link a{margin-right: 20px;font-size: 30px;color: #d74141;text-decoration: none;}

.header_link a:hover{font-size: 35px;margin-right: 10px;color: #00aaff;background-color: #ffffff;box-shadow: 0 2px 8px rgba(0, 0, 0, 1);border-radius: 5px;}

.body_background {z-index: 1;width: 100%;height: 100%;position: fixed;}