.md-file-content h1 {
    font-size: 40px
}
.md-file-content h2 {
    font-size: 35px
}
.md-file-content h3 {
    font-size: 30px
}
.md-file-content h4 {
    font-size: 25px
}
.md-file-content h5 {
    font-size: 20px
}
.md-file-content h6 {
    font-size: 15px
}