The difference between both pages is caused by the greater height in the services page, when you use the cover value for the background-size property, it will cause this effect.

区别两页面高度在服务造成更大的页面，当你的价值为背景大小使用的覆盖性，它会导致这个。

youdao

We've made the text navy blue and added a lavender background color to help the image stand out from this page background, but you get the same size image with or without the background color.

我将文本设置为海军蓝并添加一个淡紫色的背景颜色，以便这个图像从这个页面背景中凸显出来。但是，不管是否使用背景颜色，得到的图像的大小都相同。

youdao

If the size of the container changes, the background image fills appropriately to create the desired effect.

如果容器的大小改变了，背景图像会适应这种情况，从而创建我们需要的效果。

youdao

Single photos will now be displayed full screen -- the size options and white background have been nixed for the extra real estate.

ENGADGET

The Democratic president called for a vote on his three gun legislation priorities - strengthening background checks on gun buyers, limiting the size of ammunition magazines to 10 rounds, and a ban on assault weapons.

BBC: Obama in emotional plea for gun bill vote in Congress

Biden advocated a series of proposals, including universal background checks for gun owners, a ban on many military-style weapons and a limit on the size of magazines.

NPR: In Connecticut, Biden Urges Action On Gun Control