I want to move it to the upper right hand corner of the map from ArcGIS Online webmap
You say "Zoom Slider"?
Yes, zoom tool/slider. JavaScript uses the slider-position parameter. Looking for something similar.
You must override .esriLargeSliderTL class of the esri.css.
Example:
.esriLargeSliderTL {
top: 80px;
right: 30px;
}
Right, but I want to leave it on ArcGIS online. How do I overwrite their css setting?