body{font-family:'Helvetica','Arial',sans-serif;background-color:#f0f2f5;color:#333;margin:0;padding:0}.index-container{max-width:900px;margin:50px auto;padding:20px;background:#fff;border-radius:10px;box-shadow:0 4px 10px rgba(0,0,0,.1)}.index-header{text-align:center;padding:20px 0}.index-header h1{font-size:32px;color:#4267b2;margin:0 0 10px}.index-header p{font-size:18px;color:#555}.index-content{display:flex;justify-content:space-between;gap:20px;margin-top:20px}.login-section,.register-section{flex:1;background-color:#f7f7f7;padding:20px;border-radius:8px;box-shadow:0 2px 5px rgba(0,0,0,.1)}.login-section h2,.register-section h2{font-size:24px;color:#4267b2;margin-bottom:15px;text-align:center}.form-box{display:flex;flex-direction:column;align-items:center}input{width:90%;padding:12px;margin-bottom:15px;font-size:16px;border:1px solid #ddd;border-radius:5px}.action-button{width:90%;padding:12px;font-size:16px;font-weight:bold;border:none;border-radius:5px;cursor:pointer;transition:background-color .3s ease}.login-button{background-color:#4267b2;color:#fff}.register-button{background-color:#42b72a;color:#fff}.login-button:hover{background-color:#365899}.register-button:hover{background-color:#36a420}@media (max-width:768px){.index-content{flex-direction:column}}