Error in line 44 43!?

Question

css

I study at the video rate, but even in the syntax it’s not right, I don’t know what to do, even if I remove the error here, it appears in another place. prntscr.com/faqnq1 .Somewhere at 55 minutes, looked at the code, still https://www.youtube.com/watch?v=hc3vxkd0Ptk

The code

@import "bourbon" 
@import "vars.sass"

body
 font-size: 16px
  min-width: 320px  //это для мобильных устройств
  position: relative 
  line-height: 1.5 
  font-family: "RobotoRegular", sans-serif
  overflow-x: hidden
  color: #111

.hidden
  display: none

a
  outline: none!important

strong, b 
  font-family: "RobotoBold", sans-serif
  font-weight: normal 

h1, h2, h3, h4, h5, h6, .button
  font-family: "RobotoCondensedBold", sans-serif 
  font-weight: normal
  text-transform: uppercase

.top-line
  background-color: $main-color
  text-align: center
  a
      color: #fff
  ul, li
      list-style-type: none
      padding: 0
      margin: 0

  .sf-menu
      margin: 0 auto -6px
      float: none
      display: inline-block
      font-family: "RobotoCondensedRegular", sans-serif
      font-size: 15px 
      background-color: $main-color
    a 
        border-bottom: lighten($main-color, 5%) 1px solid
        border-left: lighten($main-color, 5%) 1px solid
        border-top: none
      >li
          border-bottom: lighten($main-color, 5%) 1px solid
          border-color: transparent      
            >a
                color: #fff
              border: none
              padding: 25px 28px 25px
              .fa
                  font-size: 12px
                      margin-left: 2px
          &:hover
              background-color: darken($main-color, 4%)
              >a 
                  color: $accent-color
            ul
              li 
                  background-color: #main-color
                  text-align: left
                  &:hover
                      >a 
                          color: $accent-color
                  a  
                      padding: 10px 20px
                          color: #fff

Answer 1

Can you show me your code?