body {
    font-family: 'Roboto', sans-serif;
    background-color: #222;
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
}

.rechnerbox {
    border: 1px solid #dae4e307;
    border-style: solid;
    border-radius: 10px;
    padding-inline: 50px;
    padding-top: 22px;
    padding-left: 25px;
    position: relative;
    animation: glowAnimation 10s linear infinite;
}

@keyframes glowAnimation {
    0% {
        box-shadow: 4px 4px 8px rgb(8, 0, 0), 0 0 20px #322cd1bc;
    }

    25% {
        box-shadow: 4px 4px 8px rgb(8, 0, 0), 0 0 20px #fb0d0dc5;
    }

    50% {
        box-shadow: 8px 8px 16px rgb(8, 0, 0), 0 0 25px #ffea00dc;
    }

    75% {
        box-shadow: 4px 4px 8px rgb(8, 0, 0), 0 0 20px #25c5dabc;
    }

    100% {
        box-shadow: 4px 4px 8px rgb(8, 0, 0), 0 0 20px #0e21f4d6;
    }
}

.container {
    text-align: center;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
    background-color: #444;
    max-width: 400px;
}

h1 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 20px;
    color: gold;
}

.input-container {
    text-align: center;
    margin-bottom: 15px;
    text-align: center;
}

label {
    text-align: center;
    display: block;
    margin-bottom: 5px;
    color: #fff;
}

input[type="number"] {
    padding: 10px;
    margin: 10px;
    border: 2px solid rgb(191, 185, 185);
    background-color: #666;
    text-align: center;
    font-size: 14px;
    color: #ffffff;
    border-radius: 5px;
    width: 100%;
}

button {
    padding: 10px 20px;
    background-color: #fffcfce9;
    color: #000000;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.7s ease;
}

button:hover {
    font-weight: bolder;
    background-color: gold;
}

#result {
    margin-top: 20px;
    text-align: justify;
    font-size: 18px;
    color: rgb(250, 250, 250);
}