Responsive Youtube, turn off related post, date on light background

Hi,

I thought it might help some others if I posted these changes that I made in the child theme. The changes make inserted Youtube videos responsive, changes the color of the date text when using a light background (I am working on an easy way to change all the colors by groups and will post that when I have it working), and turns off the annoying related post at the bottom, all without modifying the code and just overriding the CSS.

Here is my code:

@import url("../duena/style.css");

/* YouTube container for responsive theme
----------------------------------------------- */
.video-container {
  position: relative;
  padding-bottom: 56.25%;
  padding-top: 30px;
  height: 0;
  overflow: hidden;
}

.video-container iframe,
.video-container object,
.video-container embed {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* Post date color on white background
----------------------------------------------- */
.post_date time {
  color: #434242;
}

/* Turn off Related post display
----------------------------------------------- */
.related-posts {
  display: none;
}

Thanks