hage81: Spalten nicht übereinander

Bei mir sind die Spalten nicht genau übereinander und ich finde den Fehler leider nicht. Mit prozentueller Aufteilung klappte es auch nicht.

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    <td width="250" rowspan="4"><img src="normen/alublech.gif" alt="Alu Blech" border="0" width="250" height="150"></td>
    <td width="300" style="font-family:'Arial'; font-size:15pt; color:black; padding-left:5pt">Alu Blech l= ...</td>
    <td width="50"><img src="onenlogo.gif" alt="ON EN" border="0" width="50" height="25"></td>
    <td width="125" style="font-family:'Arial'; font-size:12pt; padding-left:5pt"><a href="normen/onen485-1.pdf "><b>ON EN 485-1</b></a></td>
    <td width="250" style="font-family:'Arial'; font-size:10pt; color:black; padding-left:5pt"><b>Teil 1: Technische Lieferbedingungen</b></td>
    <td width="45" style="font-family:'Arial'; font-size:8pt; color:black; padding-left:2pt">2008-08-01</td>
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    <td width="250" style="font-family:'Arial'; font-size:12pt; color:yellow; padding-left:5pt" rowspan="3"><b>Aluminium und Aluminiumlegierungen-Bänder, Bleche und Platten</b></font><br><font size="-1"><p align="right">ON EN 485</p></font></td>
    <td width="50"><img src="onenlogo.gif" alt="ON EN" border="0" width="50" height="25"></td>
    <td width="125" style="font-family:'Arial'; font-size:12pt; padding-left:5pt"><a href="normen/onen485-2.pdf "><b>ON EN 485-2</b></a></td>
    <td width="300" style="font-family:'Arial'; font-size:10pt; color:black; padding-left:5pt">Teil 2: Mechanische Eigenschaften</td>
    <td width="45" style="font-family:'Arial'; font-size:8pt; color:black; padding-left:2pt">2009-01-01</td>
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    <td width="50"><img src="onenlogo.gif" alt="ON EN" border="0" width="50" height="25"></td>
    <td width="125" style="font-family:'Arial'; font-size:12pt; padding-left:5pt"><a href="normen/onen485-3.pdf "><b>ON EN 485-3</b></a></td>
    <td width="300" style="font-family:'Arial'; font-size:10pt; color:black; padding-left:5pt">Teil 3: Grenzabmaße und Formtoleranzen für warmgewalzte Erzeugnisse</td>
    <td width="45" style="font-family:'Arial'; font-size:8pt; color:black; padding-left:2pt">2003-09-01</td>
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    <td width="50"><img src="onenlogo.gif" alt="ON EN" border="0" width="50" height="25"></td>
    <td width="125" style="font-family:'Arial'; font-size:12pt; padding-left:5pt"><a href="normen/onen485-4.pdf "><b>ON EN 485-4</b></a></td>
    <td width="300" style="font-family:'Arial'; font-size:10pt; color:black; padding-left:5pt">Teil 4: Grenzabmaße und Formtoleranzen für kaltgewalzte Erzeugnisse</td>
    <td width="45" style="font-family:'Arial'; font-size:8pt; color:black; padding-left:2pt">1994-03-01</td>
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    <td width="250" rowspan="4"><img src="normen/alublech.gif" alt="Blech" border="0" width="250" height="150"></td>
    <td width="300" style="font-family:'Arial'; font-size:15pt; color:black; padding-left:5pt">Blech l= ...</td>
    <td width="50" rowspan="2"><img src="onenlogo.gif" alt="ON EN" border="0" width="50" height="25"></td>
    <td width="125" rowspan="2" style="font-family:'Arial'; font-size:12pt; padding-left:5pt"><a href="normen/onen10051.pdf "><b>ON EN 10051</b></a></td>
    <td width="250" rowspan="2" style="font-family:'Arial'; font-size:10pt; color:black; padding-left:5pt"><b>Teil 1: Technische Lieferbedingungen</b></td>
    <td width="45" rowspan="2" style="font-family:'Arial'; font-size:8pt; color:black; padding-left:2pt">Sept 1997</td>
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    <td width="250" style="font-family:'Arial'; font-size:12pt; color:yellow; padding-left:5pt"><b>Kontinuierlich warmgewalztes Blech</b><br></font><font size="-.5">Grenzabmaße, Formtoleranzen und Grenzabweichungen der Masse</font><br><font size="-1"><p align="right">ON EN 485</p></font></td>
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<table width="1020" border="1" bordercolor="#000000" bgcolor="#0080C0" cellpadding="1" cellspacing="0">
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    <td width="250" rowspan="3"><img src="normen/ustahl.gif" alt="Blech ...x...x..." border="0" width="250" height="150"></td>
    <td width="250" style="font-family:'Arial'; font-size:15pt; color:black; padding-left:5pt">U-Stahl U... l=...</td>
    <td width="50"><img src="onenlogo.gif" alt="ON EN" border="0" width="50" height="25"></td>
    <td width="125" style="font-family:'Arial'; font-size:12pt; padding-left:5pt"><a href="normen/onen10279.pdf "><b>ON EN 10279</b></a></td>
    <td width="300" style="font-family:'Arial'; font-size:10pt; color:black; padding-left:5pt">für EDs als Norm angeben</td>
    <td width="45" style="font-family:'Arial'; font-size:8pt; color:black; padding-left:2pt">2000-05-01</td>
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    <td width="250" style="font-family:'Arial'; font-size:12pt; color:yellow; padding-left:5pt" rowspan="2"><b>Warmgewalzter U-Profilstahl</b><br><font size="-.5">Grenzabmaße, Formtoleranzen und Grenzabweichungen der Masse</font><br><font size="-1"><p align="right">ON EN 10279</p></font></td>
    <td width="50"><img src="dinlogo.gif" alt="DIN" border="0" width="50" height="25"></td>
    <td width="125" style="font-family:'Arial'; font-size:12pt; padding-left:5pt"><a href="normen/din1026-1.pdf "><b>DIN 1026-1</b></a></td>
    <td width="300" style="font-family:'Arial'; font-size:10pt; color:black; padding-left:5pt">zum Zeichnen von U-Stahl mit geneigten Flanschflächen</td>
    <td style="font-family:'Arial'; font-size:8pt; color:black; padding-left:2pt">2000-03-01</td>
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    <td width="50"><img src="dinlogo.gif" alt="ON EN" border="0" width="50" height="25"></td>
    <td width="125" style="font-family:'Arial'; font-size:12pt; padding-left:5pt"><a href="normen/din1026-2.pdf "><b>DIN 1026-2</b></a></td>
    <td width="300" style="font-family:'Arial'; font-size:10pt; color:black; padding-left:5pt">zum Zeichnen von U-Stahl mit parallelen Flanschflächen</td>
    <td width="45" style="font-family:'Arial'; font-size:8pt; color:black; padding-left:2pt">2006-05-01</td>
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