Why are the styles not compiling?

Question

Sass

It gives out, but I can't figure out what's wrong

@import url("../css/fonts.css") 

$colorYellow: #FFEB00
$colorGreyBlack: #3F3F44
*
  margin: 0
  padding: 0
  box-sizing: border-box

body
  color: $colorGreyBlack

.wrapper
  width: 100%
  max-width: 80%
  margin: 0 auto

//Content
//-----------------------------------------header

.main-header
  width: 100%
  height: 100vw

.burger
  display: none
  font-weight: 700
  color: #000
  font-size: 25px

.header-navigation
  .header-navigation-content
    display: flex
    justify-content: space-between
    align-items: center
    height: 10vh
  .header-logo
    font-weight: 700
    font-size: 40px
  .header-nav ul
    display: flex
    li
      list-style: none
      margin-right: 70px
      .header-nav__link
        color: #000
        text-decoration: none
        text-transform: uppercase

.header-main
  background: url("../img/header_bg.jpg") no-repeat center
  background-size: cover
  .header-main-content
    display: flex
    height: 90vh
    width: 100%
    justify-content: flex-start
  .header-main-headline
    margin-top: 125px
    width: 730px
    margin-left: 42px
  .header-title
    text-transform: uppercase
    font-size: 70px
    color: #000
    span
      background-color: $colorYellow
      display: inline-block
      margin-top: 8px
  .header-text
    margin-top: 8px
    color: #fff
    font-size: 25px
    display: inline-block
    span
      display: block
      background-color: $colorGreyBlack
      margin-top: 2px

@media only screen and (max-width: 1280px)
  .header-navigation .header-nav .header-nav-item
    display: none
  .burger
    display: block

@media only screen and (max-width: 1025px)
  .header-main
    .header-main-headline
      margin-top: 125px
      width: 730px
      margin-left: 20px
    .header-title
      font-size: 60px
      span
        background-color: #FFEB00
        display: inline-block
        margin-top: 8px
    .header-text
      margin-top: 8px
      font-size: 25px
      span
        display: block
        margin-top: 2px

@media only screen and (max-width: 767px)
  .header-main
    .header-main-content
      justify-content: center
    .header-main-headline
      margin-top: 200px
      margin-left: 20px
    .header-title
      font-size: 55px
      span
        display: inline-block
        margin-top: 8px
    .header-text
      margin-top: 8px
      font-size: 30px
      span
        display: block
        margin-top: 5px

@media only screen and (max-width: 480px)
  .header-main
    .header-main-content
      justify-content: center
      height: 70vh
    .header-main-headline
      margin-top: 200px
      margin-left: 20px
    .header-title
      font-size: 40px
      span
        display: inline-block
        margin-top: 0
        width: 100%
    .header-text
      margin-top: 8px
      font-size: 25px
      span
        display: block
        margin-top: 0
 
//----------------------------------------- end header