.mainBackground{
    background-color: black;
    width: 100%;
    height: 100%;
}
.mainBackground > img{
    position: absolute;
    height: auto;
    width: 100%;
    bottom: 3%;
}
.loginBox{
    width: 400px;
    position: absolute;
    left: calc(50% - 200px);
    top: calc(50% - 250px);
    background-color: white;
    border-radius: 15px;
    padding: 12px;
}
.logo{
    width: 95%;
}
.wider {
    width: 300px;
}

@media screen and (max-width: 500px) {
    .loginBox{
        font-size: smaller;
        left: calc(50% - 120px);
        width: 240px;
        top: 5%;
        max-height:80%;
        overflow:scroll;
    }
    .loginBox .wider {
        width: 200px;
    }
}