1.download {
2  background: none;
3  border: 0;
4  box-sizing: border-box;
5  margin: 1em;
6  padding: 1em 2em;
7  color: #039be5;
8  background-color: #fff;
9  font-size: inherit;
10  font-weight: 700;
11  position: relative;
12  vertical-align: middle;
13  border-radius: 4px;
14  box-shadow: 0px 20px 30px -15px rgba(0, 0, 0, 0.226);
15  cursor: pointer;
16}
17
18.download::before, .download::after {
19  box-sizing: inherit;
20  border-radius: inherit;
21  content: "";
22  position: absolute;
23  width: 100%;
24  height: 100%;
25}
26
27.download {
28  transition: color 0.25s;
29}
30
31.download::before, .download::after {
32  border: 2px solid transparent;
33  width: 0;
34  height: 0;
35}
36
37.download::before {
38  top: 0;
39  left: 0;
40}
41
42.download::after {
43  bottom: 0;
44  right: 0;
45}
46
47.download:focus {
48  color: #039be5;
49}
50
51.download:focus::before, .download:focus::after {
52  width: 100%;
53  height: 100%;
54}
55
56.download:focus::before {
57  border-top-color: #039be5;
58  border-right-color: #039be5;
59  transition: width 0.25s ease-out, height 0.25s ease-out 0.25s;
60}
61
62.download:focus::after {
63  border-bottom-color: #039be5;
64  border-left-color: #039be5;
65  transition: border-color 0s ease-out 0.5s, width 0.25s ease-out 0.5s, height 0.25s ease-out 0.75s;
66}
67
68.download .tooltip {
69  visibility: hidden;
70  width: 120px;
71  background-color: #039be5;
72  color: #fff;
73  text-align: center;
74  border-radius: 6px;
75  padding: 5px 0;
76  position: absolute;
77  z-index: 1;
78  bottom: 120%;
79  left: 50%;
80  margin-left: -60px;
81}
82
83.download .tooltip::after {
84  content: "";
85  position: absolute;
86  top: 100%;
87  left: 50%;
88  margin-left: -5px;
89  border-width: 5px;
90  border-style: solid;
91  border-color: #039be5 transparent transparent transparent;
92}
93
94.download:hover:not(:focus) .tooltip {
95  visibility: visible;
96}