css not update

1header
2{
3
4    background-color: #131921;
5    display: flex;
6    align-items: center;
7    position: sticky;
8    height: 10%;
9    top: 0;
10    z-index: 100;
11    padding: 10px 0;
12
13}
14
15.register-logo
16{
17
18    background-color: white;
19    border: 7px solid white;
20    border-radius:  7px;
21    margin-top: 20px;
22    margin-bottom: 15px;
23    margin-right: auto;
24    margin-left: auto;
25    object-fit: cover;
26    justify-content: center;
27    align-items: center;
28}
29
30.register-logo img
31{
32
33    width: 200px;
34
35} 
36
37
38form
39{
40
41    position: absolute;
42    width: 300px;
43    height: fit-content;
44    display: flex;
45    align-items: center;
46    flex-direction: column;
47    border-radius:  7px;
48    box-shadow: 0px 1px 2xp 3px rgba(0,0,0,0.1);
49    border: 1px solid lightgray;
50    padding: 20px;
51    top: 250;
52    
53}

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