* {
    font-family: "Comfortaa", cursive;
}
h1,h2,h3,h4,h5, b{
    font-weight: 700;
}
#back_button{
    bottom:85%;
    right: 90%;
}
@media screen and (max-width:800px){
    #back_button{
        bottom:5%;
        right: 80%;
    }
}