如何更改纯CSS动画的前景色？ Download

在以下纯CSS加载中，前景色为白色，因此在白色屏幕上不会显示任何内容。如何改变前景色？

.lds-hourglass {
  display: inline-block;
  position: relative;
  width: 120px;
  height: 120px;
  background-color: black;
}

.lds-hourglass:after {
  content: " ";
  display: block;
  border-radius: 50%;
  width: 0;
  height: 0;
  margin: 8px;
  box-sizing: border-box;
  border: 32px solid #fff;
  border-color: #fff transparent #fff transparent;
  animation: lds-hourglass 1.2s infinite;
}

@keyframes lds-hourglass {
  0% {
    transform: rotate(0);
    animation-timing-function: cubic-bezier(0.55, 0.055, 0.675, 0.19);
  }
  50% {
    transform: rotate(900deg);
    animation-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1);
  }
  100% {
    transform: rotate(1800deg);
  }
}

<div class="lds-hourglass">Loading....</div>

3 个答案:

答案 0 :(得分：1)

只需将背景色设置为:before。

请参见代码段：

.lds-hourglass {
    display: inline-block;
    position: relative;
    width: 120px;
    height: 120px;

}

    .lds-hourglass:after {
        content: " ";
        background-color:black;
        display: block;
        border-radius: 50%;
        width: 0;
        height: 0;
        margin: 8px;
        box-sizing: border-box;
        border: 32px solid #fff;
        border-color: #fff transparent #fff transparent;
        animation: lds-hourglass 1.2s infinite;
    }

@keyframes lds-hourglass {
    0% {
        transform: rotate(0);
        animation-timing-function: cubic-bezier(0.55, 0.055, 0.675, 0.19);
    }

    50% {
        transform: rotate(900deg);
        animation-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1);
    }

    100% {
        transform: rotate(1800deg);
    }
}

<div class="lds-hourglass">
Loading....
</div>

答案 1 :(得分：1)

此动画使用column_a column_b c 0 0 1 [0, 1]生成此形状，更改这些值以更改颜色：

边框：32px实心borders;
边框颜色：#f00透明#f00透明；

并要更改文本#f00的颜色，只需将此行loading..添加到您的color: #fff样式即可。

lds-hourglass

.lds-hourglass {
    display: inline-block;
    position: relative;
    width: 120px;
    height: 120px;
    background-color: #fff;
    color: #f00;
}

    .lds-hourglass:after {
        content: " ";
        display: block;
        border-radius: 50%;
        width: 0;
        height: 0;
        margin: 8px;
        box-sizing: border-box;
        border: 32px solid #f00;
        border-color: #f00 transparent #f00 transparent;
        animation: lds-hourglass 1.2s infinite;
    }

@keyframes lds-hourglass {
    0% {
        transform: rotate(0);
        animation-timing-function: cubic-bezier(0.55, 0.055, 0.675, 0.19);
    }

    50% {
        transform: rotate(900deg);
        animation-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1);
    }

    100% {
        transform: rotate(1800deg);
    }
}

答案 2 :(得分：1)

尝试将border-color: #fff transparent #fff transparent;替换为border-color: #fff black #fff black;

.lds-hourglass {
    display: inline-block;
    position: relative;
    width: 120px;
    height: 120px;
    background-color: white;
}

    .lds-hourglass:after {
        content: " ";
        display: block;
        border-radius: 50%;
        width: 0;
        height: 0;
        margin: 8px;
        box-sizing: border-box;
        border: 32px solid #fff;
        border-color: #fff black #fff black;
        animation: lds-hourglass 1.2s infinite;
    }

@keyframes lds-hourglass {
    0% {
        transform: rotate(0);
        animation-timing-function: cubic-bezier(0.55, 0.055, 0.675, 0.19);
    }

    50% {
        transform: rotate(900deg);
        animation-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1);
    }

    100% {
        transform: rotate(1800deg);
    }
}

<div class="lds-hourglass">Loading....</div>