CSS: move a "float:right" element to top (to align with the first element of the list)

Question

I've a sequence of elements and the last one has css "float:left".

I would like to display it at the same height of the first element and not on the bottom of the list. (I cannot change the html code, so it is the last in the list).

At the same time, I would like to keep it on the right. How can I make it wich CSS ?

thanks

Code:

 <div class="field field-type-text field-field-year">
    <div class="field-items">
            <div class="field-item odd">
                      <div class="field-label-inline-first">
              Year:&nbsp;</div>
                    2009        </div>
        </div>
</div>
<div class="field field-type-text field-field-where">
    <div class="field-items">
            <div class="field-item odd">
                      <div class="field-label-inline-first">
              Where:&nbsp;</div>
                    Musée Rath, Geneva        </div>
        </div>
</div>
<div class="field field-type-text field-field-when">
    <div class="field-items">
            <div class="field-item odd">
                      <div class="field-label-inline-first">
              When:&nbsp;</div>
                    25.8 – 27.9.2009        </div>
        </div>
</div>
<div class="field field-type-text field-field-editor">
    <div class="field-items">
            <div class="field-item odd">
                      <div class="field-label-inline-first">
              Editor:&nbsp;</div>
                    Blabla Blabla        </div>
        </div>
</div>
<div class="field field-type-text field-field-material">
    <div class="field-items">
            <div class="field-item odd">
                      <div class="field-label-inline-first">
              Material/techniques:&nbsp;</div>
                     contemporary art installations        </div>
        </div>
</div>
<div class="field field-type-text field-field-dimension">
    <div class="field-items">
            <div class="field-item odd">
                      <div class="field-label-inline-first">
              Dimension:&nbsp;</div>
                    2 floors in a neoclassical building        </div>
        </div>
</div>
<div class="field field-type-text field-field-artists">
    <div class="field-items">
            <div class="field-item odd">
                      <div class="field-label-inline-first">
              Artists:&nbsp;</div>
                    Blablablabla balbalbalbalba
        </div>
        </div>
</div>


    .field-field-year, .field-field-where, .field-field-when, .field-field-editor, .field-field-material, .field-field-dimension {
        width:300px;
    }



    .field-field-artists {

        width:400px;
        float:right;
        clear:right;
        top-margin: -200px;
    }

Answer 1

you have a small error, make it:

.field-field-artists { 

        width:400px; 
        float:right; 
        clear:right; 
        margin-top: -200px; 
    }