1
2
3
4

<div id="triangle-facing-top"></div>
<div id="triangle-facing-right"></div>
<div id="triangle-facing-bootom"></div>
<div id="triangle-facing-left"></div>

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

#triangle-facing-top {
    display: inline-block;  margin: 72px;
    width: 120px; height: 120px;

    border-top: 24px solid; border-right: 24px solid;
    transform: rotate(315deg);
}

#triangle-facing-right {
    display: inline-block;  margin: 72px;
    width: 120px; height: 120px;

    border-right: 24px solid; border-bottom: 24px solid;
    transform: rotate(-45deg);
}

#triangle-facing-bootom {
    display: inline-block;  margin: 72px;
    width: 120px; height: 120px;

    border-bottom: 24px solid; border-left: 24px solid;
    transform: rotate(315deg);
}

#triangle-facing-left {
    display: inline-block;
    margin: 72px;
    border-left: 24px solid; border-bottom: 24px solid;
    width: 120px; height: 120px;
    transform: rotate(45deg);
}