* {
    margin: 0;
    padding: 0;

}

html,
body {
    height: 100%;
    width: 100%;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

#app {

    text-align: center;
}

#logo-img {
    background-image: url('../image/logo.jpg');
    background-size: 100% 100%;
    width: 12rem;
    height: 3rem;
    margin: 3rem 1rem 1rem 3rem;
}

#logo-img image {
    width: 100%;
}

#title {
    margin-top: 7rem;
    margin-bottom: 5rem;
}

.btn {
    margin-top: 10rem;
}

.btn div {
    border: 1px solid #9155CC;
    width: 9rem;
    margin: 0 auto;
    line-height: 2.5rem;
    height: 2.5rem;
    margin-bottom: 1rem;
    margin-top: 1rem;
    border-radius: 10px;
}

.btn div:focus {
    background-color: #9155CC;
    color: #ffffff
}