css text to fit container

1.limit{
2    width:50px;
3    word-wrap: break-word;
4}

1//The viewport-percentage lengths are relative to the size of the initial
2//containing block. When the height or width of the initial containing block
3//are changed, they are scaled accordingly.
4//vw = (% of the viewport width). So using it will look like this:
5p {
6    font-size: 2.5vw;
7}