[I want to load CSS]

Error message

CSS file could not be read and the path was confirmed but the cause is unknown.

Applicable source code
(html code)
<! DOCTYPE html>
<html lang = "en">
  <meta charset = "utf-8">
  <link rel = "stylesheet" href = "style.css">
  <link rel = "stylesheet" href = "reset.css">
(Css code)
.header {
  width: 100%;
body {
  background-color: red;
.wrapper {
  width: 970px;
  margin: 30px auto 40px;
.main {
  display: block;
  float: left;
  width: 660px;
.sidemenu {
  float: right;
  wiidth: 275px;
.footer {
  width: 100%;

Check path

Supplemental information (FW/tool version etc.)