move in x direction css code example

Example 1: css transform size

.selector {
  transform: scale(1.2); // Will upscale to 1.2
}

Example 2: css transform property

Read this comprehensive article about CSS animation transform property. 
It also has many useful examples that help you in best way.

https://medium.com/swlh/learn-css-transform-animation-zero-to-hero-6a2a643bd56b