使用Font Awesome图标替换CSS背景图片

Question

我知道这应该很简单，但我不知道我做错了什么。我只想用Font Awesome图标替换png背景图像（css）。

这是整个css文件：

.wc-bookings-date-picker .ui-datepicker{padding:0;width:auto;}
.wc-bookings-date-picker .ui-widget-content{border:0;background:#fff;-moz-box-shadow:0 1px 3px rgba(0,0,0,.19);-webkit-box-shadow:0 1px 3px rgba(0,0,0,.19);box-shadow:0 1px 3px rgba(0,0,0,.19);}
.wc-bookings-date-picker .ui-datepicker-header{padding:0;overflow:hidden;text-transform:uppercase;border-radius:4px 4px 0 0;-webkit-border-radius:4px 4px 0 0;-moz-border-radius:4px 4px 0 0;background-color:#999;background-image:none;background-image:-moz-linear-gradient(bottom,#999 0,#aaa 100%);background-image:-o-linear-gradient(bottom,#999 0,#aaa 100%);background-image:-webkit-linear-gradient(bottom,#999 0,#aaa 100%);background-image:linear-gradient(bottom,#999 0,#aaa 100%);border:0;border-top:1px solid #999;color:#fff;}
.wc-bookings-date-picker .ui-datepicker-header .ui-state-hover{background:0 0;border-color:transparent;cursor:pointer;}
.wc-bookings-date-picker .ui-datepicker .ui-datepicker-title{line-height:1em;font-weight:400;padding:.75em 0;}
.wc-bookings-date-picker .ui-datepicker .ui-datepicker-next,.wc-bookings-date-picker .ui-datepicker .ui-datepicker-prev{top:-1px;background:#999;border-radius:0;font-weight:400;height:2.5em;width:2em;}
.wc-bookings-date-picker .ui-datepicker .ui-datepicker-next.ui-state-hover,.wc-bookings-date-picker .ui-datepicker .ui-datepicker-prev.ui-state-hover{background:#aaa;}
.wc-bookings-date-picker .ui-datepicker .ui-datepicker-prev{left:0;border:0;}
.wc-bookings-date-picker .ui-datepicker .ui-datepicker-next{right:0;border:0;}
.wc-bookings-date-picker .ui-datepicker .ui-datepicker-next span,.wc-bookings-date-picker .ui-datepicker .ui-datepicker-prev span{margin-top:-4px;top:40%;}
.wc-bookings-date-picker .ui-icon-circle-triangle-e{background-image:url(../images/ui-icons_ffffff_256x240.png);background-position:-32px 0;}
.wc-bookings-date-picker .ui-icon-circle-triangle-w{background-image:url(../images/ui-icons_ffffff_256x240.png);background-position:-96px 0;}
.wc-bookings-date-picker .ui-datepicker table{margin:0;}
.wc-bookings-date-picker .ui-datepicker th{padding:.75em 0;text-transform:uppercase;color:#bbb;font-weight:400;border-top:1px solid #e6e6e6;background:#fefefe;}
.wc-bookings-date-picker .ui-datepicker td{border:0;border-top:1px solid #e6e6e6;border-right:1px solid #e6e6e6;background:#fefefe;padding:0!important;}
.wc-bookings-date-picker .ui-datepicker td:last-child{border-right:0;}
.wc-bookings-date-picker .ui-datepicker td .ui-state-default{background:0 0;background-image:none!important;border:0;color:#2b2b2b;margin:0;font-weight:400;text-align:center;padding:.75em 0;}
.wc-bookings-date-picker .ui-datepicker td a.ui-state-active,.wc-bookings-date-picker .ui-datepicker td a.ui-state-active.ui-state-hover{background:#fefefe;color:#b2b2b2;background-image:none!important;}
.wc-bookings-date-picker .ui-datepicker td.fully_booked a,.wc-bookings-date-picker .ui-datepicker td.fully_booked span{background-color:#c0392b!important;background-image:none!important;border-color:rgba(0,0,0,.1)!important;color:#fff!important;text-shadow:0 1px 0 rgba(0,0,0,.1);}
.wc-bookings-date-picker .ui-datepicker td.bookable a{background-color:#2ecc71!important;background-image:none!important;border-color:rgba(0,0,0,.1)!important;color:#fff!important;text-shadow:0 1px 0 rgba(0,0,0,.1);}
.wc-bookings-date-picker .ui-datepicker td.partial_booked a{background-color:#2ecc71!important;background-image:none!important;border-color:rgba(0,0,0,.1)!important;color:#fff!important;text-shadow:0 1px 0 rgba(0,0,0,.1);position:relative;z-index:1;}
.wc-bookings-date-picker .ui-datepicker td.partial_booked a:before{content:"";position:absolute;top:0;left:0;width:0;height:0;border-top:2.5em solid #C96259;border-right:2.5em solid transparent;z-index:-10;opacity:.75;}
.wc-bookings-date-picker .ui-datepicker td.ui-datepicker-current-day a{background:#239e57!important;opacity:1!important;}
.wc-bookings-date-picker .ui-datepicker td.ui-datepicker-other-month{background:#eee;}
.wc-bookings-date-picker .ui-datepicker td.bookable-range .ui-state-default{background:#239e57;color:#fff;}

需要更改为Font Awesome图标的部分是:

.wc-bookings-date-picker .ui-icon-circle-triangle-e{background-image:url(../images/ui-icons_ffffff_256x240.png);background-position:-32px 0;}
.wc-bookings-date-picker .ui-icon-circle-triangle-w{background-image:url(../images/ui-icons_ffffff_256x240.png);background-position:-96px 0;}

“previous”对应的CSS内容为"\f053"

“next”对应的CSS内容为"\f054"

我感觉自己真的很傻 :(

- user1897753

---

请问您能否添加HTML并仅包含相关的CSS呢？ - Brett DeWoody

您可能还需要进行一些标记工作，因为Font Awesome实际上是由文本组成的字体，不能直接用作背景。但是，如果您想将其显示为背景，则可以将几个div叠加在一起。 - Wobbles

Answer 1

这并不是愚蠢的。Font-awesome中的图标可能看起来与图片相似，但它们的工作方式完全不同。更具体地说，它们的工作方式类似于文本。因此，您无法受益于与背景图像相关的所有功能，这些功能可以适应/拉伸容器。由于它是字体，您无法将其用于背景。幸运的是，您仍然可以使用伪元素使其出现。解决方案如下：

.wc-bookings-date-picker .ui-icon-circle-triangle-e,  .wc-bookings-date-picker .ui-icon-circle-triangle-w {
    position: relative;
}

.wc-bookings-date-picker .ui-icon-circle-triangle-e::before {
    content: "\f053";
    font-family: 'FontAwesome';
    /* Put here the height of the image */
    font-size: 240px;
    position: absolute;
    left: -32px;
    top:0;
}

.wc-bookings-date-picker .ui-icon-circle-triangle-w::before {
    content: "\f054";
    font-family: 'FontAwesome';
    /* Put here the height of the image */
    font-size: 240px;
    position: absolute;
    left: -96px;
    top:0;
}

- Mijamo

Answer 2

你必须先重置它们并确保它们设置了新的定位上下文：

.wc-bookings-date-picker .ui-icon-circle-triangle-e,
.wc-bookings-date-picker .ui-icon-circle-triangle-w { 
    background:none; 
    position:relative;
}

然后重新应用规则来使用新版本（你可以猜到另一个）。

.wc-bookings-date-picker .ui-icon-circle-triangle-w:before {
    content:"\f054";
    font-family:FontAwesome;
    left:0;
    position:absolute;
    top:0;
}

根据原始CSS可能需要进行一些额外的定位。

- Niels Keurentjes