关闭图标

.close {
  position: relative;
  display: inline-block;
  width: 12px;
  height: 12px;
}
.close:before {
  content: '';
  display: inline-block;
  position: absolute;
  top: 6px;
  width: 12px;
  border-top: 1px solid #ddd;
  transform: rotate(45deg);
}
.close:after {
  content: '';
  display: inline-block;
  position: absolute;
  top: 6px;
  width: 12px;
  border-top: 1px solid #ddd;
  transform: rotate(-45deg);
}

箭头图标

• 右箭头

.arrow {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-top: 1px solid #ddd;
  border-right: 1px solid #ddd;
  transform: rotate(45deg);
}

• 左箭头

.arrow {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-bottom: 1px solid #ddd;
  border-left: 1px solid #ddd;
  transform: rotate(45deg);
}

• 下箭头

.arrow {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-right: 1px solid #ddd;
  border-bottom: 1px solid #ddd;
  transform: rotate(45deg);
}

• 上箭头

.arrow {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-top: 1px solid #ddd;
  border-left: 1px solid #ddd;
  transform: rotate(45deg);
}

三角形

• 下三角

.triangle {
  position: relative;
  display: inline-block;
  width: 8px;
  height: 8px;
  overflow: hidden;
}
.triangle:after {
  content: '';
  position: absolute;
  top: 2px;
  display: inline-block;
  border-top: 4px solid #ddd;
  border-right: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 4px solid transparent;
}

• 上三角

.triangle {
  position: relative;
  display: inline-block;
  width: 8px;
  height: 8px;
  overflow: hidden;
}
.triangle:after {
  content: '';
  position: absolute;
  bottom: 2px;
  display: inline-block;
  border-top: 4px solid transparent;
  border-right: 4px solid transparent;
  border-bottom: 4px solid #ddd;
  border-left: 4px solid transparent;
}

• 右三角

.triangle {
  position: relative;
  display: inline-block;
  width: 8px;
  height: 8px;
  overflow: hidden;
}
.triangle:after {
  content: '';
  position: absolute;
  left: 2px;
  display: inline-block;
  border-top: 4px solid transparent;
  border-right: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 4px solid #ddd;
}

• 左三角

.triangle {
  position: relative;
  display: inline-block;
  width: 8px;
  height: 8px;
  overflow: hidden;
}
.triangle:after {
  content: '';
  position: absolute;
  right: 2px;
  display: inline-block;
  border-top: 4px solid transparent;
  border-right: 4px solid #ddd;
  border-bottom: 4px solid transparent;
  border-left: 4px solid transparent;
}