/* create an arrow that points up */
div.arrow-up {
width:0px;
height:0px;
border-left:5px solid transparent; /* left arrow slant */
border-right:5px solid transparent; /* right arrow slant */
border-bottom:5px solid #2f2f2f; /* bottom, add background color here */
font-size:0px;
line-height:0px;
}
/* create an arrow that points down */
div.arrow-down {
width:0px;
height:0px;
border-left:5px solid transparent;
border-right:5px solid transparent;
border-top:5px solid #2f2f2f;
font-size:0px;
line-height:0px;
}
/* create an arrow that points left */
div.arrow-left {
width:0px;
height:0px;
border-bottom:5px solid transparent; /* left arrow slant */
border-top:5px solid transparent; /* right arrow slant */
border-right:5px solid #2f2f2f; /* bottom, add background color here */
font-size:0px;
line-height:0px;
}
/* create an arrow that points right */
div.arrow-right {
width:0px;
height:0px;
border-bottom:5px solid transparent; /* left arrow slant */
border-top:5px solid transparent; /* right arrow slant */
border-left:5px solid #2f2f2f; /* bottom, add background color here */
font-size:0px;
line-height:0px;
}以上是CSS如何寫出三角形的詳細內容。更多資訊請關注PHP中文網其他相關文章！
