Achieving Perfect Alignment in Website Layout using CSS and HTML

I have a customized CSS layout that was made for me, but I am no longer in contact with the original creator. I wanted to increase the size of a specific div (#rightcolumn) by 55px. To achieve this, I resized the iframe within the div and it automatically expanded as intended. However, this adjustment caused the banner (#topsection) to become slightly shorter, so I had to add 55px to its width, making it 1255px.

As a result, the page is now off-center. I have attempted to edit other floating commands to realign the content, but all my efforts have resulted in the divs appearing misplaced. After struggling for several days, I am reaching out for assistance with re-centering the elements on the page. Any help would be greatly appreciated.

Test out the changes on this page: Serious Sports Bigger Link to the updated CSS file: CSS link

body {
    margin:0;
    padding:0;
    line-height:1.5em;
    background:#C0C0C0;
}
b {
    font-size:110%;
}
em {
    color:red;
}
#maincontainer {
    width:1200px;
    margin:0 auto;
}
#topsection {
    background:#191919;
    height:90px;
    width:1255px
}
#contentwrapper {
    float:left;
    width:100%;
}
#contentcolumn {
    margin:0 360px 0 180px;
    color:#F1F1F1;
}
#leftcolumn {
    float:left;
    width:180px;
    margin-left:-1200px;
    background:#C8FC98;
}
#rightcolumn {
    float:left;
    width:355px;
    margin-left:-355px;
    background:#E5E5E5;
}
#footer {
    clear:left;
    width:100%;
    background:#191919;
    color:#FFF;
    text-align:center;
    padding:4px 0;
}
#footer a {
    color:#62C301;
}
.innertube {
    margin:10px;
    margin-top:0;
}
.arrowgreen {
    width:180px;
    border-style:solid solid none solid;
    border-color:#94AA74;
    border-size:1px;
    border-width:1px;
}
.arrowgreen ul {
    list-style-type:none;
    margin:0;
    padding:0;
}
.arrowgreen li a {
    font:bold 12px Verdana, Arial, Helvetica, sans-serif;
    display:block;
    background:transparent url(http://i39.tinypic.com/2r2rhnc.gif) 100% 0;
    height:24px;
    padding:4px 0 4px 10px;
    line-height:24px;
    text-decoration:none;
}
.arrowgreen li a:link, .arrowgreen li a:visited {
    color:#5E7830;
}
.arrowgreen li a:hover {
    color:#26370A;
    background-position:100% -32px;
}
.arrowgreen li a.selected {
    color:#26370A;
    background-position:100% -64px;
}

Answer №1

Another important step is to update the DOCTYPE declaration to

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd"> 

Answer №2

#primarybox is sized at 1200px;, causing your elements to spill over. Here's a fix:

#maincontainer{
  width:1255px; margin:0 auto;
}

Answer №3

Consider including the following snippet:

html {
    padding: 20px;
}

Answer №4

The CSS code seems to be duplicated, it might be worth investigating.

Consider implementing the following CSS:

#maincontainer {
    width: 1255px;
    margin: 0 auto;
}

#contentwrapper {
    float: left;
    width: 1200px;
}

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