Multiple and different images not responsive css

I have a section in a website with logos (images) of a lot of brands So In the desktop version I have 8 columns and 3 rows... And I look fine, but in the mobile version look awful

This is a pic of the website

Website

And this is a pic of the mobile version

Mobile

This is the css code

aside.clients {
    text-align: center;
    background-color: #ffffff;
    margin-bottom: 20px;
}
aside.clients img {
    position: relative;
    margin-top: 15px;
    margin-bottom: 10px;
    overflow: hidden;
    width: 100%;
    height:auto;
}