input[type=range] {
    -webkit-appearance: none;
    width: 100%;
    border-radius: 10px; /*这个属性设置使填充进度条时的图形为圆角*/
}
input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
}    

input[type=range]::-webkit-slider-runnable-track {
    height: 15px;
    border-radius: 10px; /*将轨道设为圆角的*/
    
}

input[type=range]:focus {
    outline: none;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 25px;
    width: 25px;
    margin-top: -5px; /*使滑块超出轨道部分的偏移量相等*/
    background: #ffffff; 
    border-radius: 50%; /*外观设置为圆形*/
    border: solid 0.125em rgba(205, 224, 230, 0.5); /*设置边框*/
    box-shadow: 0 .125em .125em #3b4547; /*添加底部阴影*/
}