* {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
}
h1 {
    margin: 1rem 0rem 0rem 0rem;
    color: green;
}
strong {
    font-size: 0.8rem;
    text-align: center;
    width: 500px;
    margin-top: 100px;
    color: green;
}
.total {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 1rem;
    border-radius: 1rem;
    font-weight: 700;
    font-size: 1.2rem;
    text-transform: uppercase;
    margin-top: 2rem;
    background-color: green;
    width: 150px;
    height: 76px;
    color: #fff;
    transition: 1s;
    animation: reverse;
}
#resultado{
    padding: 1rem;
}
.container {
    display: flex;
    flex-direction: column;
    width: 100%;
    align-items: center;
    justify-content: center;
}
.box {
    display: flex;
    width: 500px;
    flex-direction: column;
}
body input {
    width: 500px;
    border: 1px solid #929292;
    border-radius: 0.25rem;
    outline: none;
    color: #000;
    height: 30px;
    font-size: 1rem;
    font-weight: 700;
    padding: 5px;
}
body label{
    font-size: 1rem;
    color: green;
    font-weight: 700;
    margin: 1rem 0rem 0.3rem 0rem;
}
button {
    margin-top: 1rem;
    height: 40px;
    padding: 5px;
    border-radius: 0.25rem;
    border: 0;
    color: white;
    background-color: green;
    font-size: 1rem;
    font-weight: 700;
}

/* Dispositivos pequenos (telefones em paisagem, 576px e superiores) */
@media (min-width: 320px) { 
    h1{
        font-size: 1.2rem;
    }
    strong {
        width: 300px;
        font-size: 0.6em;
        margin-top: 50px;
    }
    body input {
        width: 280px;
    }
    .box{
        width: 290px;
    }
    .container{
        width: 100%;
    }
    
 }

/* Dispositivos médios (tablets, 768px e superiores) */
@media (min-width: 768px) { 
    h1{
        font-size: 1.8rem;
    }
    strong {
        width: 400px;
        font-size: 0.8em;
        margin-top: 70px;
    }
    body input {
        width: 500px;
    }
    .box{
        width: 500px;
    }
 }

/* Dispositivos grandes (desktops, 992px e superiores) */
@media (min-width: 992px) { 

 }

/* Dispositivos X-Large (desktops grandes, 1200px e superiores) */
@media (min-width: 1200px) { 

 }

/* Dispositivos XX-Large (desktops maiores, 1400px e superiores) */
@media (min-width: 1400px) { 

 }