.centrar{ text-align: center;
        align-items: center;
}


body {
    background-color: #e0f2f1;
}
.red {
    color: red;
}
 
#footer {
    position: fixed;
    width: 100%;
    height: 40px;
    line-height: 40px;
    vertical-align: middle;
    background-color: black;
    color: white;
    text-align: center;
    bottom: 0;
    left: 0;
}