Two divs side by side - Fluid display

Question

I am trying to place two divs side by side and using the following CSS for it.

#left {
  float: left;
  width: 65%;
          


        

Answer 1

#sides{
margin:0;
}
#left{
float:left;
width:75%;
overflow:hidden;
}
#right{
float:left;
width:25%;
overflow:hidden;
} 

Left Side
Right Side