It sounds little bit repetitive but it gives me the desired result. To achieve this with much ease, you may need put the CSS values in a class in your style-sheet:
.td_size {
width:200px;
height:50px;
max-width:200px;
min-width:200px;
max-height:50px;
min-height:50px;
**overflow:hidden;** /*(Optional)This might be useful for some overflow contents*/
}