Q:

How to Make a Div transparent with background color

i want to make a div transparent who have backgound-color:#5A7D00.
Actually i want to achieve this result which i want

but i am not able to achieve this.Please help me with some code to achieve (avoid res strips) 

A:

You need to convert the color to rbg so you can use it with the rgba() property.
In this case, what you are after is:
background-color: rgba(90, 125, 0, 0.5);

The last of those 4 values being the opacity level (0.5)

