weird line thingy

gistfile1.txt

.container {
  /* z-index: -1; */
  position: absolute;
  margin: 0 auto;
  display: flex;
  flex-direction: row;
  background: hsl(0, 0%, 90%);
  right: 0;
  left: 0;
  margin-left: auto;
  margin-right: auto;
  top: 20%;
  width: 980px;
  height: 1px;
  background-color: orange;
}

.sidebar {
  min-width: 150px;
  margin-right: 15px;
  background-color: tomato;
  max-height: 1px;
}

.main {
  background-color: pink;
  max-height: 1px;
  min-width: 550px;
  margin-right: 15px;
}


.gutter {
  /* margin-left: 730px; */
  min-width: 250px;
  background-color: lightblue;
}