1.textblock-container {
2width: 500px;
3height: 500px;
4border: 1px solid red;
5position: relative;
6}
7
8div.textblock {
9width: 100px;
10height: 100px;
11line-height: 100px;
12border: 1px solid black;
13position: absolute;
14text-align: center;
15background: rgb(0, 150, 0);
16background: rgba(0, 150, 0, .5);
17}