CSS ::滚动条
可能存在元素的内容可能大于为其分配的空间量的情况。例如，给定的width和height属性不允许足够的空间容纳元素的内容。
CSS提供了一个称为溢流的属性 ，该属性 告诉浏览器如果盒子的内容大于盒子本身的大小，该怎么办。此属性可以采用以下值之一-
Example of scroll value:
I am going to keep lot of content here just to show you how
scrollbars works if there is an overflow in an element box.
This provides your horizontal as well as vertical scrollbars.
Example of auto value:
I am going to keep lot of content here just to show you how
scrollbars works if there is an overflow in an element box.
This provides your horizontal as well as vertical scrollbars.