* {
    margin: 0rem;
    padding: 0rem;
    box-sizing: border-box;
}

html {
    font-size: 10px;
}

.container {
    height: 35rem;
    width: 46rem;
    margin: auto;
    margin-top: 10rem;
}

#heading {
    font-size: 3.5rem;
    text-align: center;
    margin: 2.5rem 0rem 2.5rem 0rem;
    color: red;
    text-decoration: underline;
}

.main {
    height: 25rem;
    width: 45rem;
    border: grey solid 0.1rem;
    margin: auto;
    background-color: rgb(158, 235, 235);
    background-image: linear-gradient(45deg, rgb(231, 131, 131), rgb(135, 135, 232), rgb(165, 234, 165));
    border-radius: 1.5rem;
}

.main-child {
    height: 6rem;
    width: 25rem;
    margin: auto;
    margin-top: 5.5rem;
    display: flex;
    justify-content: space-between;
    font-size: 5rem;
}

.btn {
    height: 4rem;
    width: 25rem;
    margin: auto;
    margin-top: 3.5rem;
    display: flex;
    justify-content: space-between;
}

.btn button {
    height: 100%;
    width: 7rem;
    font-size: 2rem;
    padding: 0.2rem;
    border-radius: 0.5rem;
    border: grey solid 0.1rem;
    cursor: pointer;
    background-color: aquamarine;
    color: red;
}



@media only screen and (max-width:480px) {
    html {
        font-size: 7.11px;
    }
}