1、去掉input number类型后的上下箭头
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
-webkit-appearance: none;
}
input[type="number"] {
-moz-appearance: textfield;
}
2、input type为number时可以输入e
3、换行
word-break: break-all;会截掉单词
word-wrap: break-word;
