回答編集履歴
2
追記
test
CHANGED
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@@ -39,3 +39,77 @@
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39
39
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}
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40
40
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41
41
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```
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42
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+
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43
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+
追記: cerfwebさん回答の疑似要素も使って九重 (コード中のカラーは上が外側、下に行くほど内側の色となるよう並べてあります)
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44
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+
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45
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+
```CSS
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46
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47
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+
div {
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48
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+
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49
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width: 600px;
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50
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+
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51
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height: 400px;
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52
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53
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margin: 30px;
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54
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+
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55
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box-shadow: 0 0 0 20px #ffadad; /* 一番外側の色 */
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56
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+
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57
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outline: solid 10px #ffd6a5;
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58
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+
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59
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border: solid 10px #fdffb6;
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60
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+
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61
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position: relative;
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62
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63
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padding: 30px;
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64
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+
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65
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}
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66
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+
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67
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+
div::after {
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68
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69
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display: block;
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70
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71
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position: absolute;
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72
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73
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width: calc(100% - 60px);
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74
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+
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75
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height: calc(100% - 60px);
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76
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+
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77
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content: "";
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78
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+
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79
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margin: 50px;
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|
80
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+
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81
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+
box-shadow: 0 0 0 20px #caffbf;
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82
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+
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83
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outline: solid 10px #9bf6ff;
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84
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+
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85
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+
border: solid 10px #a0c4ff;
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86
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+
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87
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+
top: -30px;
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88
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+
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89
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+
left: -30px;
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90
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+
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91
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+
}
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92
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+
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93
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+
div::before {
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94
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+
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95
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display: block;
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96
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+
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97
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position: absolute;
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98
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+
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99
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width: calc(100% - 120px);
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100
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+
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101
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height: calc(100% - 120px);
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102
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+
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103
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+
content: "";
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104
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+
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105
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+
margin: 20px;
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106
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+
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107
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+
box-shadow: 0 0 0 20px #bdb2ff;
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108
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+
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109
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+
outline: solid 10px #ffc6ff;
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|
110
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+
|
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111
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+
border: solid 10px #eddcd2; /* 一番内側の色 */
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112
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+
|
|
113
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+
}
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114
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+
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115
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+
```
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1
追記
test
CHANGED
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@@ -17,3 +17,25 @@
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17
17
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}
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18
18
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19
19
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```
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20
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+
|
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21
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+
追記: outlineも使って三重
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|
22
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+
|
|
23
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+
```CSS
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|
24
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+
|
|
25
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+
div {
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26
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+
|
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27
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+
width: 600px;
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|
28
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+
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29
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+
height: 400px;
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|
30
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+
|
|
31
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+
margin: 30px;
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|
32
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+
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33
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+
box-shadow: 0 0 0 20px #01FA00;
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34
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+
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35
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+
outline: solid 10px #CF88EC;
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36
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+
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37
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+
border: solid 10px #FF9400;
|
|
38
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+
|
|
39
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+
}
|
|
40
|
+
|
|
41
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+
```
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