html{
    height: 100%;
}
body{
    height: 100%;
    margin: 0px;
    padding: 0px;
}
body #app{
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.box-panel{
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}
.banner{
    display: flex;
    align-items: center;
    justify-content: center;
}
.banner .wrapper{
    position: relative;
    width: 80%;
    display: block;
    padding-bottom: 100%;
    max-width: 480px;
}
.banner .wrapper .item-banner{
    position: absolute;
    left: 10px;
    right: 10px;
    bottom: 10px;
    top: 10px;
    border-radius: 10px;
    overflow: hidden;
}

.banner .wrapper .item-banner img{
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.login-box{
    display: flex;
    justify-content: center;
    flex-direction: column;
    width: 80%;
}

.container{
    max-height: 100%;
}

@media only screen and (max-width: 600px) {
    .banner .wrapper {
      width: 100%;
    }
    .banner .wrapper .item-banner{
        left: 0px;
        right: 0px;
        bottom: 0px;
        top: 0px;
    }
    .login-box{
        width: 100%;
    }
    .top-small{
        margin-top: 30px;
    }
  }