1.input {
2  max-width: 200px;
3  min-height: 40px;
4  padding: 10px;
5  font-family: 'Courier New', Courier, monospace;
6  outline: none;
7  background: #e8e8e8;
8  box-shadow: 5px 5px 17px #c8c8c8,
9             -5px -5px 17px #ffffff;
10  border: none;
11  border-radius: 10px;
12  transition: all .5s;
13}
14
15.input:focus {
16  background: #e8e8e8;
17  box-shadow: inset 5px 5px 17px #c8c8c8,
18            inset -5px -5px 17px #ffffff;
19}