*{
    padding: 0;
    margin: 0;
    top: 0;
    left: 0;
    color: white;
}
body{
    background: linear-gradient(180deg, rgb(42, 42, 42), rgb(0, 0, 0));
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 40px;
    height: 100vh;
}

select{
    background: rgb(21, 25, 42);
    padding: 5px;
    border-radius: 10px;
    box-shadow: 0 0 10px black;
}

input{
    color: black;
    width: 280px;
    height: 30px;
    border-radius: 20px;
    padding: 5px 15px;
}
.res{
    width: 300px;
    color: black;
    height: auto;
    font-size: 30px;
    padding: 10px;
    background: rgba(255, 255, 255, 0.642);
    border-radius: 20px;
    box-shadow: 0 0 10px black;
}
button{
    transition: 0.3s;
    background: rgb(0, 0, 0);
    color: white;
    box-shadow: 0 0 10px black;
    border: none;
    font-size: 20px;
    padding: 8px;
    border-radius: 10px;
}

button:hover{
    transition: 0.3s;
    background: rgb(255, 255, 255);
    color: rgb(0, 0, 0);
    box-shadow: 0 0 10px rgb(255, 255, 255);
}