Every timeI scroll the page down the screen the nav does stay fixed but all the images inside the nav become larger. I think it has something to do with the width being inherited from somewhere else but I can't figure out how not to get the images changing size when scrolling but still retaining the ability to scale the images if the page changes size.
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<h2>Welcome to Gardening in West Auckland</h2>
<p>A warm greeting to all the keen gardeners and especially those who live as I do in the West of Auckland. The purpose of this site will be to share some information about how to best grow a variety of flowering plants, shrubs and herbs in the challenging soils of the West.</p>
<p>Gardening is a relaxing hobby but also one that requires some hardwork at times. For those that have experienced the joy of seeing things you have planted grow and bloom you know the satisfaction that this brings. So I would encourage any of you reading this who have neever tried it to "give it a go". Start small, perhaps with a couple of containers or pot plants. Ask your local gardening store about what would look attractive if you are into flowers or what can poroduce a good crop if you asre trying to grow something for eating in a container.</p>
<h2>Starting a new Garden</h2>
<p>Many West Auckland gardeners will find that the soil your are working in will have a thin layer of reasonable soil and then quickly you will hit clay. The notes that follow are some suggestions for preparing a new garden in clay soils.</p>
<p>If your garden has heavy clay soil, you know what a challenge it can pose to plants, not to mention gardeners. Heavy clay drains slowly, meaning it stays saturated longer after rain or irrigation. Then, when the sun finally comes out and the soil dries, it forms a hard, cracked surface.</p>
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<img src="images/spreading-lime.png" alt="Spreading fertiser on the garden as part of preparation process." width="230" height="312" class="scale-image" />
<p class="caption">The spreading of lime can help <br/>reduce the acidity of soil</p>
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<p>On the bright side, clay soils are usually richer in nutrients than sandy soils are. And clay's tendency to hold water tightly can be an advantage. Here are some tips for making clay soil more manageable and easier to work.</p>
<h3>Tools and Materials</h3>
<ul>
<li>Soil test kit or commercial test</li>
<li>Organic mulches: compost and aged manure, straw</li>
<li>Wheelbarrow or cart</li>
<li>Shovel</li>
<li>Rake</li>
<li>Cover crop</li>
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<h4>Test soil pH, and adjust as necessary.</h4>
<p>Clay soils are rich in nutrients, but if the soil is too acidic or too alkaline, those nutrients won't be available to the plants. Use a home test kit or send a sample to a soil testing lab, then follow the recommendations for adjusting pH. For most garden plants, a pH of 6.3 to 6.8 is ideal. Find a lab near you by checking in your telephone directory, or by calling your local cooperative extension office.<p>
<h4>Add organic matter.</h4>
<p>This helps improve drainage and lighten heavy soil. It also provides nutrients for beneficial soil microorganisms which will, in turn, also help improve the soil. Before planting in spring, add compost and aged manure. A 10 cm layer worked into the soil to shovel depth is a good amount. Throughout the growing season, mulch with organic materials like grass clippings, shredded leaves, or additional compost. Since soil microorganisms literally "eat" organic matter, make a habit of continually adding it to your soil.</p>
<h4>Build raised beds.</h4>
<p>Because clay soils hold water, creating raised beds can help improve drainage by encouraging water to run off. Raised beds can be a simple mound of soil, or can be constructed out of wood, brick, or stone. To lessen compaction, size the beds so you can reach the middle without stepping in the bed.</p>
<h4>Mulch beds over the winter.</h4>
<p>Driving rain can really pack down bare soil, so keep beds mulched with organic matter both during the growing season and over the winter. A layer of straw over the beds will protect the soil from compaction and reduce erosion; it can also help minimize weed growth. In the spring, transfer the mulch to the garden paths.</p>
<h4>Plant a cover crop.</h4>
<p>A cover crop is like a living mulch. Different cover crops are appropriate for different regions. In the north, winter wheat and winter rye are popular choices; in warmer regions, crimson clover and oats are commonly used. For a winter cover crop, sow after the last crops have been harvested. The following spring, simply till the plants into the soil, adding yet more precious organic matter.</p>
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