* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
.heart {
    width: 35px;
    height: 35px;
    position: absolute;
}
body,html {
    height: 100%;
    overflow: hidden;
}
#app {
    width: 100%;
    height: 100%;
    position: relative;
}