*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    margin-top: 7%;
    width: 100%;
    height: 100%;
    background-color: black;
    font-family: 'Courier New', Courier, monospace;
    color: lightgreen;
    display: flex;
    justify-content: center;
    text-align: center;
}
section{
    width: 50%;
    height: 70vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
h1{
    font-family: 'Orbitron';
    color: rgb(218, 165, 32);
    font-size: 30px;
}
.norm{
    margin-top: 25px;
    padding: 35px;
}
span{
    margin-top: 25px;
    font-family: 'Orbitron';
    font-size: 8em;
    color: rgb(218, 165, 32);
    font-weight: bold;
}
.tela{
    padding: 40px;
    display: flex;
    justify-content: center;
    text-align: center;
    border: 2px solid lightgreen;
    width: 250px;
    min-height: 250px;
    border-radius: 15px;
    overflow: hidden;
}
.btn{
    padding: 15px 100px;
    background-color: black;
    border: 2px solid rgba(218, 148, 19, 1);
    border-radius: 10px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 1.3em;
    color: orange;
    font-weight: bold;
    transition: 0.5s;
}
.btn:hover{
    transition: 0.5s;
    background-color: orange;
    color: black ;
    cursor: pointer;
}
h4{
    font-family: 'Orbitron';
    margin-top: 25px;
}
.mensagem {
    display: none;
    animation: show-down .6s ease;
}
@keyframes show-down
{
    from {transform: translateY(-100%);}
    to {transform: translateY(0); }
}