I have encountered an issue where I created two small blocks, but they do not start from the screen edges. Instead, they take up space from the left, right, and top as well. Here is my code:
HTML
<body>
<div id="header"></div>
<div id="block1"></div>
</body>
CSS
#header
{
background:#1A2328;
height:150px;
}
#block1
{
height:600px;
background:#657;
}