Sassでextendとincludeをよくど忘れするのでメモ
%custom_btn_style {
@extend %sprite_setting;
width: 28px;
height: 28px;
}
.btn_top {
@extend %custom_btn_style;
background-position: -60px 0;
@include box_shadow(1px 1px 2px 0 #BFBFBF);
&:hover {
background-position: -90px 0;
}
}