Task One Won't Complete

I'm having problems getting Task One to complete successfully.

I'll enter the code and everything looks fine, but then it tells me that I haven't set the font size correctly even though I have.

If I delete the 'ul', then immediately type it back in the way it was before, it suddenly says that I've done it right and I can move on .

Then, when I move to the next task and begin to type ANYTHING in, it tells me that Task One is no longer complete even though absolutely nothing has been changed. :(

This is forcing me into this endless loop where I'm entering in the right code, it tells me I'm not, I re-type it the exact way it was before, it says I can move on, then as soon as I do it tells me I have to go back again and restarts the process.

ul .contact-info { font-size: 0.9em; margin: 0; padding: 0; list-style: none; }

This is basically the block of css it tells me is both right and wrong.

a {
  text-decoration: none;
}

#wrapper {
  max-width: 940px;
  margin: 0 auto;
}

#logo {
  text-align: center;
  margin: 0;
}

h1, h2 {
  color: #fff;
}

nav a {
  color: #fff;
}

nav a:hover {
  color: #32673f;
}

h1 {
  font-family: ‘Changa One’, sans-serif;
  font-size: 1.75em;
  font-weight: normal;
}

img {
  max-width: 100%;
}

#gallery {
  margin: 0;
  padding: 0;
  list-style: none;
}

#gallery li {
  float: left;
  width: 45%;
  margin: 2.5%;
  background-color: #f5f5f5;
  color: #bdc3c7;
}

nav ul {
  list-style: none;
  margin: 0 10px;
  padding: 0;
}

nav li {
  display: inline-block;
}

nav a {
  font-weight: 800;
  padding: 15px 10px;
}

.profile-photo {
  display: block;
  margin: 0 auto 30px;
      max-width: 150px;
  border-radius: 100%;
}

ul .contact-info {
  font-size: 0.9em;
  margin: 0;
  padding: 0;
  list-style: none;
}