body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    background-color: #f4f4f4;
    color: #333;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    font-family:'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

#solver-container {
    text-align: center;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

input, button {
    margin: 10px;
    padding: 8px;
    outline-color: crimson;
    font-size: 16px;
}
button{
    border: none;
    background-color: crimson;
    color: white;
    cursor: pointer;
    border-radius: 7px;
    padding: 9px;
    transition: 0.3s;
}
button:hover{
    opacity: 0.8;
}

.footer{
    border-top: 1px solid black;
    padding: 0.4rem;
}


#result{
    padding: 0.4rem;
}

@media screen and (max-width: 700px) {
    #solver-container {
        width: 89%;
    }
}

@media screen and (max-width: 300px) {
    input{
        width: 90%;
    }
}