.rechner-container{margin:2em auto;background:#fff;padding:2rem;border-radius:.5rem;box-shadow:0 3px 12px #0000000F}.rechner-container label{display:block;margin-bottom:5px;font-weight:700}.rechner-container input[type="number"]{width:calc(100% - 22px);padding:10px;margin-bottom:15px;border:1px solid #ccc;border-radius:4px}.rechner-container .button-gruppe{display:flex;gap:10px;flex-wrap:wrap}.rechner-container button{padding:.875rem;background-color:#36a271;color:#fff;font-weight:600;border:none;border-radius:5px;cursor:pointer;transition:background-color 0.2s;margin-top:1rem}.rechner-container button:hover{background-color:#2d8a5f}.rechner-container .btn-anleitung{background:#e6e6e6;color:#333}.rechner-container .btn-anleitung:hover{background:#d0d0d0}.rechner-container .anleitung-box{margin-top:1.5rem;padding:1.5rem;background-color:#f9f9f9;border:1px solid #ddd;border-radius:.5rem}.rechner-container .anleitung-content h3{margin-top:0;color:#333}.rechner-container .anleitung-img{max-width:100%;height:auto;margin:1rem 0;border-radius:.5rem}.rechner-container .btn-schliessen{background-color:#6c757d;margin-top:1rem}.rechner-container .btn-schliessen:hover{background-color:#5a6268}.rechner-container .ergebnis{margin-top:1.5rem;padding:1rem;background-color:#f6f7f7;border-radius:.5rem;text-align:center}.rechner-container .ergebnis p{margin:5px 0}.rechner-container .error-message{color:red;font-weight:700}.rechner-container .hinweis{font-size:.9em;font-style:italic;margin-top:15px!important;color:#555}.rechner-container .hinweis strong{font-style:normal}.text-center{text-align:center}