body {
    display: grid;
    min-height: 100dvh;
    grid-template-rows: auto 1fr auto;
    background: #CFCFD1;
}

header {
    padding: 2% 5%;
    text-align: center;
    background-color: #0B1C2D;
}

main {
    padding: 2% 5%;
    margin: 3% 5%;
    border-radius: 20px;
    background-color: #98B3AA;
    border: 2px solid #0B1C2D;
}

footer {
    background-color: #0B1C2D;
}

@media (min-width: 770px) {
    .aleixr{
        width: 30%;
        display: flex;
        justify-content: center;
        align-items: center;
        margin: auto;
    }
}

@media (max-width: 770px) {
    .aleixr{
        width: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
        margin: auto;
    }
}

.alert-danger{
    text-align: center;
}

.ocultar{
    display: none;
}