Responsive Images with CSS

.erb-image-wrapper img{
    max-width:100% !important;
    height:auto;
    display:block;
}

Worked for me.
Thanks for MrMisterMan for his assistance.

Use max-width on the images too. Change:

.erb-image-wrapper img{
    width:100% !important;
    height:100% !important;
    display:block;
}

to...

.erb-image-wrapper img{
    max-width:100% !important;
    max-height:100% !important;
    display:block;
}

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