/*：此代码只作为演示用,不是源代码。源码地址唯一出处: http://www.bootstrapmb.com/item/6076(这个说明仅在演示里会看到,下载的源码里没有)*/.nice-number {  display: inline-flex;  justify-content: stretch;}.nice-number input {  vertical-align: middle;  -moz-appearance: textfield;  box-sizing: content-box;  margin: 0;  text-align: center;}.nice-number input::-webkit-inner-spin-button,.nice-number input::-webkit-outer-spin-button {  -webkit-appearance: none;  margin: 0;}/*：此代码只作为演示用,不是源代码。源码地址唯一出处: http://www.bootstrapmb.com/item/6076(这个说明仅在演示里会看到,下载的源码里没有)*/