#the_beginning_button {
    background-color: #7d95ff;
}
#the_1960s_button {
    background-color: #E68A57;
}
#the_1970s_button {
    background-color: #7ed957;
}
#the_1980s_button {
    background-color: #ff66c4;
}

#the_1990s_button {
    background-color: #ff3131;
}
#the_2000s_button {
    background-color: #d19d77;
}
#the_2010s_button {
    background-color: #4a2c82;
}