:root {
    --gridjs: 900px;
    --gridbg: rgb(0,0,0);
}
main{
    max-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}
#container{
    margin-top: 10px;
    border: 0.3px solid black;
    display: flex;
    flex-wrap: wrap;
    width: 600px;
    max-height: 80vh;
}
#minhaid{
    background-color: var(--gridbg);
    opacity: 0;
    width: calc(600px / var(--gridjs));
    height: calc(80vh  / var(--gridjs));
    transition: opacity 0.2s;
}
button {
    width: 200px;
    padding: 1em;
}