1button {
2  cursor: pointer;
3  background-color: transparent;
4  color: white;
5  border: none;
6  font-size: 17px;
7  position: relative;
8  z-index: 3;
9  transition: 0.5s;
10  -webkit-transition: 0.5s;
11  -moz-transition: 0.5s;
12  -ms-transition: 0.5s;
13  -o-transition: 0.5s;
14}
15
16button::before {
17  content: "";
18  border: 3px solid white;
19  position: absolute;
20  left: -25px;
21  bottom: 0;
22  display: block;
23  width: 10px;
24  height: 10px;
25  border-radius: 60px;
26  -webkit-border-radius: 60px;
27  -moz-border-radius: 60px;
28  -ms-border-radius: 60px;
29  -o-border-radius: 60px;
30  transition: 0.5s;
31  -webkit-transition: 0.5s;
32  -moz-transition: 0.5s;
33  -ms-transition: 0.5s;
34  -o-transition: 0.5s;
35}
36
37button:hover::before {
38  left: -25px;
39  bottom: -17.5px;
40  width: 100%;
41  padding: 20px;
42  background-color: white;
43  z-index: -1;
44}
45
46button:hover {
47  color: #282828;
48}
49