*{margin:0;padding:0;}
        .main{width:100vw;height:100vh; display:flex; align-items:center; justify-content: center; flex-direction:column;}
        .lang-btn{ display: flex; align-items: center; justify-content:center;}
        .lang-btn a{ background:#009d4a; color:#fff; display: flex; align-items:center;justify-content:center; width: 230px; line-height:45px; font-size:16px; border-radius:6px;text-align:center; margin: 0 20px;text-decoration:none;}
        .lang-btn a:hover{box-shadow:0px 6px 0px 0px #00823e;font-weight:bold;}
        .main p{ text-align: center;}
        .circuit-img{ max-width: 90%; text-align:center;}
        .circuit-img img{ max-width: 100%; }
        .copyright-a{display:flex; align-items:center; justify-content:center;margin:0;margin-top:10px}
        @media (max-width:768px){ .lang-btn a{ width: auto; padding:0 10px; margin: 0 10px; } .copyright-a{ flex-direction: column;font-size:14px; }.copyright-text{font-size:14px;}}
        .mt-20{margin:0;margin-top:20px}
        .mt-10{margin:0;margin-top:20px}
        .link1{display:flex; align-items:center; text-decoration:none;padding-left:30px;}
        .link_text{margin: 0px 0px 0px 5px; color:#939393;}
        .link2{display:inline-block;text-decoration:none;color:#939393;margin-left:20px}