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

body {
    width: 100%;
    height: 100vh;
    background: rgba(204, 204, 204, 1);
    color: #000;
}

main {
    font-size: 1.3rem;
    margin: 10px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

main .headingSec {
    text-align: center;
    margin: 10px 0 20px 0;
    font-size: 1.5em;
}

main .inputSec .btn {
    padding: 15px;
    margin: 20px;
    width: 90%;
    max-width: 500px;
    border-radius: 10px;
    border: 2px solid #000;
    box-shadow: 0 8px 0 0 #000000;
    font-size: 1.1em;
    transition: 0.3s all;
}

main .inputSec .btn:active {
    box-shadow: 0 3px 0 0 #000000;
    transform: translateY(2px);
}